[Instrument for facilitating the calculation of larvicides applied to streams].
D000818:Animals; D035843:Biomedical Research; D010575:Pesticides; D045483:Rivers; D012552:Schistosomiasis / Q000517:prevention & control*; D012908:Snails
D010575:Pesticides
PESTICIDES; SCHISTOSOMIASIS/prevention and control; SNAILS