eggs of Oncomelania hupensis
eliminating oncomelania
evaluation of oncomelania control by changing environment
GOT of Oncomelania hupensis
mechanism of controlling oncomelania
Oncomelania elimination
oncomelania elimination and schistosomiasis preven
oncomelania hupensis area
oncomelania hupensis Gredler
Oncomelania hupensis hupensis
Oncomelania hupensis snail
Oncomelania hupensis snail dispersal
Oncomelania hupensis snail distribution
Oncomelania hupensis snails from foreign land