Author: Walker B.,
Title: A synopsis of the classification of the fresh-water Mollusca of North America, north of Mexico, and a catalogue of the more recently described species
Description: 1918. In 8vo, original wrappers, pp. 213 with 233 figs. Misc. Publ. Mus. Zool. Univ. Michigan, n. 6. Covers soiled, spine defective

Keywords: shells molluscs


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