diff --git a/projects/common-map/src/fm-map/actions/map.actions.ts b/projects/common-map/src/fm-map/actions/map.actions.ts
index afd8cab..cb87f3c 100644
--- a/projects/common-map/src/fm-map/actions/map.actions.ts
+++ b/projects/common-map/src/fm-map/actions/map.actions.ts
@@ -2,7 +2,7 @@ import { Action } from '@ngrx/store';
 
 import { IMapState } from '../models/map.state';
 import { IItemLayer } from '../models/item.layer';
-import { IQueryState } from '../models/query.state';
+import { IQueryState } from '@farmmaps/common';
 import { IItem } from '@farmmaps/common';
 import { Feature,Style } from 'ol';
 
diff --git a/projects/common-map/src/fm-map/common-map.module.ts b/projects/common-map/src/fm-map/common-map.module.ts
index 0178b67..aa84e50 100644
--- a/projects/common-map/src/fm-map/common-map.module.ts
+++ b/projects/common-map/src/fm-map/common-map.module.ts
@@ -20,7 +20,6 @@ import { IMapState} from './models/map.state';
 import { ISelectedFeatures } from './models/selected.features';
 import { IItemLayer } from './models/item.layer';
 import { ItemLayer} from './models/item.layer';
-import { IQueryState } from './models/query.state';
 import { IPeriodState } from './models/period.state';
 
 // components
@@ -57,7 +56,6 @@ import { MapSearchComponent } from './components/map-search/map-search.component
 import { MapRoutingModule } from './common-map-routing.module';
 import { LegendComponent } from './components/legend/legend.component';
 import { LayerVectorImageComponent } from './components/aol/layer-vector-image/layer-vector-image.component';
-import { StateSerializerService } from './services/state-serializer.service';
 import {FeatureIconService} from './services/feature-icon.service';
 import { GeolocationService } from './services/geolocation.service';
 import {DeviceOrientationService} from './services/device-orientation.service';
@@ -133,7 +131,6 @@ export {
   AbstractItemWidgetComponent,
   AbstractItemListItemComponent,
   AbstractItemListComponent,
-  StateSerializerService,
   FeatureIconService,
   GeolocationService,
   DeviceOrientationService,
@@ -141,7 +138,6 @@ export {
   ISelectedFeatures,
   IItemLayer,
   ItemLayer,
-  IQueryState,
   IPeriodState,
   ForChild,
   ForItemType,
@@ -254,7 +250,6 @@ export class AppCommonMapModule {
     return {
       ngModule: AppCommonMapModule,      
       providers: [
-        StateSerializerService,
         FeatureIconService,
         GeolocationService,
         DeviceOrientationService,
diff --git a/projects/common-map/src/fm-map/components/feature-list-container/feature-list-container.component.ts b/projects/common-map/src/fm-map/components/feature-list-container/feature-list-container.component.ts
index de80465..80482a2 100644
--- a/projects/common-map/src/fm-map/components/feature-list-container/feature-list-container.component.ts
+++ b/projects/common-map/src/fm-map/components/feature-list-container/feature-list-container.component.ts
@@ -2,7 +2,7 @@ import { Component, Input, OnInit, ComponentFactoryResolver, ViewChild, SimpleCh
 import { Feature } from 'ol';
 import { FeatureListComponent,AbstractFeatureListComponent } from '../feature-list/feature-list.component';
 import { WidgetHostDirective } from '../widget-host/widget-host.directive';
-import  {IQueryState } from '../../models/query.state';
+import  {IQueryState } from '@farmmaps/common';
 import * as mapReducers from '../../reducers/map.reducer';
 import * as mapActions from '../../actions/map.actions';
 import { Store } from '@ngrx/store';
diff --git a/projects/common-map/src/fm-map/components/feature-list/feature-list.component.ts b/projects/common-map/src/fm-map/components/feature-list/feature-list.component.ts
index 4b89734..119866c 100644
--- a/projects/common-map/src/fm-map/components/feature-list/feature-list.component.ts
+++ b/projects/common-map/src/fm-map/components/feature-list/feature-list.component.ts
@@ -1,52 +1,52 @@
-import { Component, Input, Injectable } from '@angular/core';
-import { Location } from '@angular/common';
-import { Feature } from 'ol';
-import { Store } from '@ngrx/store';
-import * as mapReducers from '../../reducers/map.reducer';
-import { commonReducers,ItemTypeService, IItem, Item } from '@farmmaps/common';
-import * as mapActions from '../../actions/map.actions';
-import { Observable, from } from 'rxjs';
-import { withLatestFrom } from 'rxjs/operators';
-import { tassign } from 'tassign';
-import { IQueryState } from '../../models/query.state';
-
-
-@Injectable()
-export abstract class AbstractFeatureListComponent {
-  @Input() features: Array<Feature>;
-  @Input() queryState: IQueryState;
-  constructor(public store: Store<mapReducers.State | commonReducers.State>, public itemTypeService: ItemTypeService, private location: Location) {
-  }
-
-  handleFeatureClick(feature:Feature) {
-    var newQuery: any = tassign(mapReducers.initialState.query);
-    newQuery.itemCode = feature.get('code');
-    this.store.dispatch(new mapActions.DoQuery(newQuery));
-  }
-
-  handleFeatureMouseEnter(feature) {
-    this.store.dispatch(new mapActions.SelectFeature(feature));
-  }
-
-  handleFeatureMouseLeave(feature) {
-    this.store.dispatch(new mapActions.SelectFeature(null));
-  }
-
-  handleBackClick(event: MouseEvent) {
-    event.preventDefault();
-    this.location.back();
-  }
-}
-
-@Injectable()
-@Component({
-  selector: 'fm-map-feature-list',
-  templateUrl: './feature-list.component.html',
-  styleUrls: ['./feature-list.component.scss']
-})
-export class FeatureListComponent extends AbstractFeatureListComponent {
-
-  constructor(store: Store<mapReducers.State | commonReducers.State>, itemTypeService: ItemTypeService,location:Location) {
-    super(store, itemTypeService,location);
-  }
-}
+import { Component, Input, Injectable } from '@angular/core';
+import { Location } from '@angular/common';
+import { Feature } from 'ol';
+import { Store } from '@ngrx/store';
+import * as mapReducers from '../../reducers/map.reducer';
+import { commonReducers,ItemTypeService, IItem, Item } from '@farmmaps/common';
+import * as mapActions from '../../actions/map.actions';
+import { Observable, from } from 'rxjs';
+import { withLatestFrom } from 'rxjs/operators';
+import { tassign } from 'tassign';
+import { IQueryState } from '@farmmaps/common';
+
+
+@Injectable()
+export abstract class AbstractFeatureListComponent {
+  @Input() features: Array<Feature>;
+  @Input() queryState: IQueryState;
+  constructor(public store: Store<mapReducers.State | commonReducers.State>, public itemTypeService: ItemTypeService, private location: Location) {
+  }
+
+  handleFeatureClick(feature:Feature) {
+    var newQuery: any = tassign(mapReducers.initialState.query);
+    newQuery.itemCode = feature.get('code');
+    this.store.dispatch(new mapActions.DoQuery(newQuery));
+  }
+
+  handleFeatureMouseEnter(feature) {
+    this.store.dispatch(new mapActions.SelectFeature(feature));
+  }
+
+  handleFeatureMouseLeave(feature) {
+    this.store.dispatch(new mapActions.SelectFeature(null));
+  }
+
+  handleBackClick(event: MouseEvent) {
+    event.preventDefault();
+    this.location.back();
+  }
+}
+
+@Injectable()
+@Component({
+  selector: 'fm-map-feature-list',
+  templateUrl: './feature-list.component.html',
+  styleUrls: ['./feature-list.component.scss']
+})
+export class FeatureListComponent extends AbstractFeatureListComponent {
+
+  constructor(store: Store<mapReducers.State | commonReducers.State>, itemTypeService: ItemTypeService,location:Location) {
+    super(store, itemTypeService,location);
+  }
+}
diff --git a/projects/common-map/src/fm-map/components/map-search/map-search.component.ts b/projects/common-map/src/fm-map/components/map-search/map-search.component.ts
index a099c26..fe8c2e5 100644
--- a/projects/common-map/src/fm-map/components/map-search/map-search.component.ts
+++ b/projects/common-map/src/fm-map/components/map-search/map-search.component.ts
@@ -2,7 +2,7 @@ import { Component, Input, Output, OnInit, EventEmitter, SimpleChanges, OnChange
 import { Observable ,  of } from 'rxjs';
 import { debounceTime,distinctUntilChanged,tap,switchMap,merge,catchError} from 'rxjs/operators';
 import { TypeaheadService, TimespanService } from '@farmmaps/common';
-import { IQueryState } from '../../models/query.state';
+import { IQueryState } from '@farmmaps/common';
 import { IPeriodState } from '../../models/period.state';
 import { tassign } from 'tassign';
 
diff --git a/projects/common-map/src/fm-map/components/map/map.component.ts b/projects/common-map/src/fm-map/components/map/map.component.ts
index 6928321..8f7ddb5 100644
--- a/projects/common-map/src/fm-map/components/map/map.component.ts
+++ b/projects/common-map/src/fm-map/components/map/map.component.ts
@@ -12,12 +12,12 @@ import * as mapActions from '../../actions/map.actions';
 import { IMapState} from '../../models/map.state';
 import { ISelectedFeatures } from '../../models/selected.features';
 import { IItemLayer } from '../../models/item.layer';
-import { IQueryState } from '../../models/query.state';
+import { IQueryState } from '@farmmaps/common';
 import { IPeriodState } from '../../models/period.state';
 import {IStyles} from '../../models/style.cache';
 import { IDroppedFile } from '../aol/file-drop-target/file-drop-target.component';
 import { IMetaData } from '../meta-data-modal/meta-data-modal.component';
-import { StateSerializerService } from '../../services/state-serializer.service';
+import { StateSerializerService } from '@farmmaps/common';
 import { GeolocationService} from '../../services/geolocation.service';
 import {DeviceOrientationService} from '../../services/device-orientation.service';
 
diff --git a/projects/common-map/src/fm-map/models/query.state.ts b/projects/common-map/src/fm-map/models/query.state.ts
deleted file mode 100644
index cc011cd..0000000
--- a/projects/common-map/src/fm-map/models/query.state.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-export interface IQueryState {
-  itemCode: string;
-  parentCode: string;
-  level: number;
-  itemType: string;
-  query: string;
-  tags: string;
-  bboxFilter: boolean;
-  startDate: Date;
-  endDate: Date;
-  bbox: number[];
-}
diff --git a/projects/common-map/src/fm-map/reducers/map.reducer.ts b/projects/common-map/src/fm-map/reducers/map.reducer.ts
index 0a7d7e7..b2e7fda 100644
--- a/projects/common-map/src/fm-map/reducers/map.reducer.ts
+++ b/projects/common-map/src/fm-map/reducers/map.reducer.ts
@@ -2,7 +2,7 @@ import { tassign } from 'tassign';
 import { IItem,Item } from '@farmmaps/common';
 import { IItemLayer,ItemLayer} from '../models/item.layer';
 import { IMapState} from '../models/map.state';
-import { IQueryState} from '../models/query.state';
+import { IQueryState} from '@farmmaps/common';
 import { IPeriodState} from '../models/period.state';
 import { IStyles} from '../models/style.cache';
 import * as mapActions from '../actions/map.actions';
diff --git a/projects/common-map/src/fm-map/services/state-serializer.service.ts b/projects/common-map/src/fm-map/services/state-serializer.service.ts
deleted file mode 100644
index 3fb9b31..0000000
--- a/projects/common-map/src/fm-map/services/state-serializer.service.ts
+++ /dev/null
@@ -1,52 +0,0 @@
-import { Injectable, Query } from '@angular/core';
-import { IQueryState } from '../models/query.state';
-import { query } from '@angular/animations';
-
-@Injectable()
-export class StateSerializerService {
-
-  serialize(queryState: IQueryState): string {
-
-    var state = "";
-    state += (queryState.itemCode) ? queryState.itemCode : "";
-    state += ";";
-    state += (queryState.parentCode) ? queryState.parentCode + ";" + queryState.level.toString() : ";";
-    state += ";";
-    state += (queryState.itemType) ?  queryState.itemType : "";
-    state += ";";
-    state += (queryState.query) ? encodeURIComponent( queryState.query ) : "";
-    state += ";";
-    state += (queryState.tags) ? encodeURIComponent( queryState.tags ) : "";
-    state += ";";
-    state += (queryState.bboxFilter) ? "1" : "0";
-    state += ";";
-    state += (queryState.startDate) ? JSON.stringify(queryState.startDate) : "";
-    state += ";";
-    state += (queryState.endDate) ? JSON.stringify(queryState.endDate) : "";
-    state += ";";
-    state += (queryState.bboxFilter && queryState.bbox && queryState.bbox.length>0) ? JSON.stringify(queryState.bbox) : "";
-
-    return btoa(state);
-  }
-
-  deserialize(queryState: string): IQueryState {
-    var state: IQueryState = { itemCode: null, parentCode: null, level: 1, itemType: null, query: null, tags: null, bboxFilter: false, startDate: null, endDate: null,bbox:[] };
-    var stateParts = atob(queryState).split(";");
-    if (stateParts.length == 10) {
-      if (stateParts[0] != "") state.itemCode = stateParts[0];
-      if (stateParts[1] != "") {
-        state.parentCode = stateParts[1];
-        state.level = parseInt(stateParts[2]);
-      }
-      if (stateParts[3] != "") state.itemType = stateParts[3];
-      if (stateParts[4] != "") state.query = decodeURIComponent(stateParts[4]);
-      if (stateParts[5] != "") state.tags = decodeURIComponent( stateParts[5]);
-      if (stateParts[6] != "") state.bboxFilter = parseInt(stateParts[6]) == 1;
-      if (stateParts[7] != "") state.startDate = new Date(Date.parse(JSON.parse(stateParts[7])));
-      if (stateParts[8] != "") state.endDate = new Date(Date.parse(JSON.parse(stateParts[8])));
-      if (stateParts[9] != "") state.bbox = JSON.parse(stateParts[9]);
-    }
-
-    return state;
-  }
-}