[Establishing trace elements in the environment on the basis of honeybee gathering activity].
D002031:Bulgaria; D004777:Environment; D006722:Honey / Q000032:analysis*; D011058:Pollen / Q000032:analysis*; D014131:Trace Elements / Q000032:analysis*
D014131:Trace Elements
Opiti za izpolzuvane na o'biratelnata deinost na pchelite za ustanoviavane na mikroelementi v okolnata sreda