Shell variability of the terrestrial mollusk Chondrula tridens (Pulmonata, Enidae) in the forest-steppe zone of the volga upland.Published in:Biology Bulletin, 2015, v. 42, n. 6, p. 515, doi. 10.1134/S1062359015050076By:Komarova, E.;Smirnov, D.;Stojko, T.Publication type:Article