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Pilsbry, H. A. (1939). Freshwater Mollusca and Crustacea from near El Molino, Bolivia. John Hopkins University Studies in Geology. 13: 69-73.
Pilsbry, H. A. (1939). Freshwater Mollusca and Crustacea from near El Molino, Bolivia. John Hopkins University Studies in Geology. 13: 69-73.