Grinnell, J., Swarth, H. S. (Harry Schelwald)., Swarth, H. S. (Harry Schelwald)., Swarth, H. Schelwald. (1914). The pocket gopher of the Boreal zone on San Jacinto Peak. San Francisco: The Academy.MLA Citation
Grinnell, Joseph, 1877-1939, H. S. (Harry Schelwald) Swarth, H. S. (Harry Schelwald) Swarth, and Harry Schelwald Swarth. The Pocket Gopher of the Boreal Zone On San Jacinto Peak. San Francisco: The Academy, 1914.
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