Cooper, J. G. (1867). Geographical catalogue of the Mollusca found west of the Rocky Mountains, between latitudes 33° and 49° north. San Francisco: Geological Survey of California. 40 pp.
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Cooper, J. G.
1867
<i>Geographical catalogue of the Mollusca found west of the Rocky Mountains, between latitudes 33° and 49° north</i>. San Francisco: Geological Survey of California. 40 pp.
