A Check List of North American Amphibians and Reptiles. By Leonhard Stejneger and Thomas Barbour. Cambridge, Massachusetts, Harvard University Press. 1917. 125 pages. | Science
A Check List of North American Amphibians and Reptiles. By Leonhard Stejneger and Thomas Barbour. Second Edition. Cambridge, Massachusetts, Harvard University Press, 1923. 171 pages. | Science
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