Author: Ant H.,
Title: Zur Frage der Artberechtigung, der Synonymie und der Verbreitung von Vertigo heldi (Clessin, 1877)
Description: 1961. In 8vo, offp., pp. 5 with 3 figs. Offprint from Arch. Moll., 90(4-6)

Keywords: shells molluscs snails


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