TY - GOVDOC DP - http://iris.who.int/ DB - WHO IRIS AU - Executive Board, 19 CY - Geneva PP - Geneva LA - en PB - World Health Organization UR - https://iris.who.int/handle/10665/131295 DA - 1956 PY - 1956 SE - (Provisional agenda item 2.9.3) M1 - EB19/7 TI - Study group on the ecology of intermediate snail hosts of bilharziasis KW - Snails KW - Schistosomiasis KW - transmission ER -