37 books
The Mammals and Life Zones of Oregon (Classic Reprint)
Animal Life of the Carlsbad Cavern (Classic Reprint)
Wolves, in Relation to Stock, Game, and the National Forest Reserves (Classic Reprint)
Beaver Habits, Beaver Control, and Possibilities in Beaver Farming (Classic Reprint)
Life Zones and Crop Zones of New Mexico (Classic Reprint)
Biological Survey of Texas: Life Zones, With Characteristic Species of Mammals, Birds, Reptiles, and Plants; Reptiles, With Notes on Distribution; Mammals, With Notes on Distribution, Habits, and Economic Importance (Classic Reprint)
A Biological Survey of North Dakota: I. Physiography and Life Zones; II. The Mammals (Classic Reprint)
North American Fauna No. 49
North American Fauna No. 49: A Biological Survey of North Dakota; I. Physiography and Life Zones; II. The Mammals (Large Text Classic Reprint)
Birds Known to Eat the Boll Weevil (Classic Reprint)
Mammals of New Mexico (Classic Reprint)
The Pocket Gophers of the United States (Classic Reprint)
Revision of the Pocket Gophers of the Genus Thomomys (Classic Reprint)
The Prairie Ground Squirrels or Spermophiles of the Mississippi Valley (Classic Reprint)
Revision of American Voles of the Genus Microtus (Classic Reprint)
North American fauna
The mammals. The Birds
The Mammals and Life Zones of Oregon - Scholar's Choice Edition
Revision of American Voles of the Genus Microtus Volume 17
Biological Survey of Texas, Issues 25-26 - Primary Source Edition
The Prairie Gound Squirrels of Spermophiles of the Mississippi Valley
Wolves in Relation to Stock, Game, and the National Forest Reserves
Revision of the Pocket Gophers of the Genus Thomomys
Revision of American Voles and the Genus Microtus