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... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical substances by use or effect > pest control compounds > pesticides > pesticides by target organism > avicides > fenthion

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... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical substances by use or effect > pest control compounds > pesticides > pesticides by composition > organophosphorus pesticides > organophosphorus ectoparasiticides > fenthion

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical substances by use or effect > drugs > drugs by function > antiparasitic agents > ectoparasiticides > organophosphorus ectoparasiticides > fenthion

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical substances by use or effect > pest control compounds > pesticides > pesticides by target organism > insecticides > insecticides by composition > organophosphorus insecticides > organothiophosphate insecticides > fenthion

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical elements and compounds > inorganic compounds > organic compounds > organic compounds by structure or composition > organic compounds by non-carbon element > organic compounds by non-metallic element > organophosphorus compounds > organophosphorus pesticides > organophosphorus insecticides > organothiophosphate insecticides > fenthion

... > PHYSICAL SCIENCES > chemistry > chemical substances > chemical substances by use or effect > pest control compounds > pesticides > pesticides by composition > organophosphorus pesticides > organophosphorus insecticides > organothiophosphate insecticides > fenthion