Observations on the life-cycle of Psilotrema oligoon (Linstow, 1887) Odhner, 1913, and on the larval stages of two other psilostome trematodes.
D000818:Animals; D004463:Ecology; D012908:Snails; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification / Q000254:growth & development*