title: On some problems of the biological control of human schistosomes in Egypt.
mesh_terms: D000818:Animals; D001700:Biomphalaria / Q000469:parasitology; D002033:Bulinus / Q000469:parasitology; D004372:Ducks; D004449:Echinostoma / Q000302:isolation & purification; D004534:Egypt; D005618:Fresh Water; D006801:Humans; D007814:Larva / Q000302:isolation & purification; D010572:Pest Control, Biological; D012547:Schistosoma; D012548:Schistosoma haematobium / Q000302:isolation & purification; D012550:Schistosoma mansoni / Q000302:isolation & purification; D014200:Trematoda / Q000302:isolation & purification