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The Alien Corn

Eastern Aphids

Woolly Aphid of Elm and Juneberry

Studies of State Departments of Education

First Lessons in Nature Study

Encyclopedia of Controlled Drug Delivery: M-Z

Chermes of Maine Conifers

Homologies of the Wing Veins of the Aphididae, Psyllidae, Aleurodidae, and Coccidae ...

Origin, Distribution, and Uses of Dolomite in the United States, with Complete Bibliography

Food-plant Catalogue of the Aphids of the World