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Webb, Robert G.

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A New Species of Frog (Genus Tomodactylus) from Western México

A New Species of Frog (Genus Tomodactylus) from Western México

Webb, Robert G.

Description of a New Softshell Turtle from the Southeastern United States

Description of a New Softshell Turtle from the Southeastern United States

Webb, Robert G.

North American Recent Soft-Shelled Turtles (Family Trionychidae)

North American Recent Soft-Shelled Turtles (Family Trionychidae)

Webb, Robert G.