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Libros electrónicos
Leaf Hoppers Injurious to Cereal and Forage Crops
Gratis
The Hessian Fly in the United States: Volumes 16-22
Gratis
Insects affecting domestic animals
Gratis
Leafhoppers of Maine: Volumes 235-245
Gratis
Needed: A System of Aquatic Farming
Gratis
Studies of Life Histories of Froghoppers of Maine
Gratis
Economic Zoology: An Introductory Text-book in Zoology, with Special Reference to Its Applications in Agriculture, Commerce, and Medicine
Gratis
Entomological Work for 1895
Gratis
The Meadow Plant Bug, Miris Dolobratus
Gratis
Reports on Injurious Insects
Gratis
Effects of Spraying on Plants and Fruit and Notes on Insects
Gratis
Entomological Notes for the Year 1882
Gratis
A Review of the North American Species of Athysanun (Jassidae)
Gratis
Report on Injurious Insects
Gratis
Agricultural Entomology for Students, Farmers, Fruit-growers and Gardeners
Gratis
Studies of the Life Histories of Grass Feeding Jassidae
Gratis
Some Insects Destructive to Grass [etc.]
Gratis
Articles on Parasitic Insects and Poisonous Insects
Gratis
The Pediculi and Mallophaga Affecting Man and the Lower Animals: Issues 6-7; Issues 9-10
Gratis
Papers on Iowa Insects, Consistin of Fruit and Forest Tree Insects, and Some Iowa Farm Insects
Gratis