Title: Kishechnai︠a︡ reguli︠a︡tornai︠a︡ sistema bespozvonochnykh zhivotnyx i ee predpolagaemai︠a︡ ėvoli︠u︡t︠s︡ii︠a︡ u mnogokletochnyx
First published: 2001
Subjects: Anatomy, Metazoa, Invertebrates