KEY TO THE FAMILIES OF NORTH AMERICAN INSECTS AN INTRODUCTION TO THE CLASSIFICATION OF INSECTS BY CHARLES T BRUES AND AL MELANDER ...
Keys to the Living and Extinct Families of Insects, and to the Living Families of Other Terrestrial Arthropods. By Prof. Charles T. Brues, Prof. A. L. Melander and Prof. Frank M. Carpenter. (Bulletin ...
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