Total population density of crustacea and aquatic insecta as an indicator of fenthion pollution of river water.
D000818:Animals; D002849:Chromatography, Gas; D003445:Crustacea / Q000502:physiology*; D005284:Fenthion / Q000032:analysis*; D005618:Fresh Water / Q000032:analysis; D007313:Insecta / Q000502:physiology*; D010573:Pesticide Residues / Q000032:analysis; D013997:Time Factors; D014877:Water Pollution, Chemical / Q000032:analysis*
D010573:Pesticide Residues; D005284:Fenthion