[Analysis of the number of square meters of snail infected areas before and after control measures in Ji-Cheng-Yuan].
D000818:Animals; D002681:China; D005260:Female; D008297:Male; D008433:Mathematics; D008975:Molluscacides; D012549:Schistosoma japonicum / Q000302:isolation & purification*; D012908:Snails / Q000382:microbiology*
D008975:Molluscacides