Author
4 free books by Robert J. Russell, free to read online. Chapter 1 of any book is free, no account needed.
Evolution and Classification of the Pocket Gophers of the Subfamily Geomyinae
Robert J. Russell
Four New Pocket Gophers of the Genus Cratogeomys from Jalisco, Mexico
Pleistocene Pocket Gophers From San Josecito Cave, Nuevo Leon, Mexico
A New Species of Pocket Gopher (Genus Pappogeomys) From Jalisco, México
