19 books
The Fungus Gnats of North America, Vol. 4: Conclusion (Classic Reprint)
Insect Notes for 1912 (Classic Reprint)
Spruce Bud Worm and Spruce Leaf Miners (Classic Reprint)
Spruce Bud Worm and Spruce Leaf Miners (Large Text Classic Reprint)
Potato Flea-Beetle (Epitrix Cucumeris) (Classic Reprint)
Insect Notes for 1910 (Classic Reprint)
Embryology of Insects and Myriapods (Classic Reprint)
The Fungus Gnats of North America, Vol. 2 (Classic Reprint)
Insect Notes for 1911 (Classic Reprint)
The Fungus Gnats of North America, Vol. 3 (Classic Reprint)
Insect Notes for 1909 (Classic Reprint)
The Fungus Gnats of North America, Vol. 1 (Classic Reprint)
Handbook of Medical Entomology - Primary Source Edition
Aquatic Nematocerous Diptera Volume 1-2
Aquatic Nematocerous Diptera, II; Chironomidae ...
New North American Chironomidae
Aquatic Nematocerous Diptera, N II. P Chironomidae H
Aquatic Nematocerous Diptera (Volume 1)
Aquatic Nematocerous Diptera, II.
