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A Quantitative Study of the Nocturnal Migration of Birds
Jr. George H. Lowery
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The Determined Angler and the Brook Trout
Charles Barker Bradford
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Neotropical Hylid Frogs, Genus Smilisca
William Edward Duellman and Linda Trueb
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A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope
John D. Lynch
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Birds and Man
W. H. Hudson
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Notes on the Mammals of Gogebic and Ontonagon Counties, Michigan, 1920
Lee R. Dice and Harley Bakwel Sherman
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Fishes of the Big Blue River Basin, Kansas
W. L. Minckley
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Journal of Entomology and Zoology, Vol. 11, No. 4, December 1919
Various
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Ecological Studies of the Timber Wolf in Northeastern Minnesota
L. David Mech, Louis Daniel Frenzel, Robert R. Ream, John W. Winship, and P. D. Karns
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Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz
John M. Legler
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The Story of an Ostrich: An Allegory and Humorous Satire in Rhyme.
I. J. Potter
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A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America)
John Wellman
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Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster)
Henry S. Fitch
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The Ancestry of Modern Amphibia: A Review of the Evidence
Theodore H. Eaton
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Geographic Variation in the Pocket Gopher, Thomomys bottae, in Colorado
Phillip M. Youngman
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The Argus Pheasant
John Charles Beecham
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The Breeding Birds of Kansas
Richard F. Johnston
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Ecology of the Opossum on a Natural Area in Northeastern Kansas
Henry S. Fitch and Lewis L. Sandidge
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Habits, Haunts and Anecdotes of the Moose and Illustrations from Life
Charles Albert Jones
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Hunting in Many Lands: The Book of the Boone and Crockett Club
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Humpback Whales in Glacier Bay National Monument, Alaska
United States. Marine Mammal Commission
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Butterflies Worth Knowing
Clarence Moores Weed
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The Confessions of a Poacher
F.L.S. John Watson
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Antarctic Penguins: A Study of Their Social Habits
G. Murray Levick
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Marvels of Pond-life
Henry James Slack
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