The butterflies of North America : a natural history and field guide
The only field guide to cover all North American butterfly species, this monumental work is also a complete natural history, fully describing the biological and ecological world of butterflies in general. It is without question the most important book on butterflies in several decades, and the most complete treatment of a major butterfly faun ever published
Print Book, English, 1997
Stanford University Press, Stanford, Calif., 1997