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General Note: |
No. 37--Revision of the American marmots, Howell, Arthur Holmes, 1872-1940. |
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No. 38--A review of the American moles, Jackson, Hartley H.T. (Hartley Harrad Thompson), 1881- |
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No. 39--Revision of the pocket gophers of the genus Thomomys. Bailey, Vernon, 1864-1942. |
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No. 40--A systematic account of the prairie-dogs. Hollister, Ned 1876-1924. |