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Key to the families of North American insects; an introduction to the classification of ...

KEY TO THE FAMILIES OF NORTH AMERICAN INSECTS AN INTRODUCTION TO THE CLASSIFICATION OF INSECTS BY CHARLES T BRUES AND AL MELANDER ...
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Insects: Facts about the creepy-crawlies that make up more than half of the world's animal ...

Discover interesting facts about insects, the critters whose combined weight on the planet is 70 times that of all humans. When you purchase through links on our site, we may earn an affiliate ...
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Ecology and classification of North American freshwater invertebrates / edited by James H ...

Introduction to freshwater invertebrates / James H. Thorp and Alan P. Covich -- An overview of freshwater habitats / James H. Thorp and Alan P. Covich -- Protozoa / William D. Taylor and Robert W.