Prevention of diseases simulating cholera in Calcutta.
D035843:Biomedical Research; D002771:Cholera; D003140:Communicable Disease Control; D006801:Humans; D007194:India; D012478:Salmonella Food Poisoning; D014876:Water Pollution
CHOLERA; COMMUNICABLE DISEASE CONTROL; SALMONELLA FOOD POISONING; WATER POLLUTION