Seasonal changes in the distribution of Biomphalaria sudanica sudanica (Martens) in Lake Zwai, Ethiopia.
D000818:Animals; D001700:Biomphalaria / Q000469:parasitology / Q000502:physiology*; D005002:Ethiopia; D011156:Population Density; D012550:Schistosoma mansoni; D012552:Schistosomiasis / Q000635:transmission; D012621:Seasons