Keep, J. (1887). West coast shells. A familiar description of the marine, fresh water, and land mollusks of the United States, found west of the Rocky Mountains. Bancroft Brothers, San Francisco. 1-230.
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Keep, J.
1887
West coast shells. A familiar description of the marine, fresh water, and land mollusks of the United States, found west of the Rocky Mountains. Bancroft Brothers, San Francisco.