Author: Bartsch P.,
Title: Notes on the freshwater mollusk Planorbis magnificus and descriptions of two new forms of the same genus from the Southern States
Description: 1907. In 8vo, offp., pp. pp. 4 + 1 pl. Offprint from Proc. US. Natnl. Mus., 33 n. 1587

Keywords: shells molluscs land snails


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