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1958
Marriage, Lowell D., and Oregon. Fish Commission. The bay clams of Oregon: their identification, relative abundance, and distribution In Educational bulletin - Fish Commission of Oregon. Vol. no. 2. Portland, OR: [Oregon Fish Commission], 1958.
1936
Baily, Vernon. Mammals and life zones of Oregon In North American Fauna. Vol. no.55. Washington, DC: Government Printing Office, 1936.

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