R. L. Ditmars

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The Reptiles of North America

H. K. Gloyd, R. L. Ditmars, 1936 .

HERPETOLOGY OF JAPAN AND ADJACENT TERRITORY

R. L. Ditmars, 1907 .

Snakes of the World

R. L. Ditmars, 1932 .

The feeding habits of serpents

R. L. Ditmars, 1912 .

A review of the box turtles

R. L. Ditmars, 1934 .

Reptiles of the world : the crocodilians, lizards, snakes, turtles and tortoises of the eastern and western hemispheres

R. L. Ditmars, 1933 .

The Reptiles of North America : a review of the crocodilians, lizards, snakes, turtles and tortoises inhabiting the United States and Northern Mexico

R. L. Ditmars, 1936 .

The Seventeen Year "Locust"

R. L. Ditmars, 1931, Science.

Reptiles of the world : tortoises and turtles, crocodilians, lizards and snakes of the eastern and western hemispheres / by Raymond L. Ditmars.

R. L. Ditmars, 1922 .

The vampire bat--A presentation of undescribed habits and review of its history

A. Greenhall, R. L. Ditmars, 1935 .

The reptile book; a comprehensive, popularised work on the structure and habits of the turtles, tortoises, crocodilians, lizards and snakes which inhabit the United States and northern Mexico

R. L. Ditmars, 2010 .