How to Know the Butterflies
Subtitle: Illustrated keys for determining to species all butterflies found in North America, north of Mexico, with notes on their distribution, habits, and larval food, and suggestions for collecting and studying them.
By: Paul R. Ehrlich, Anne H. Ehrlich ; with sections contributed by D.L. Bauer ... [et al.].
Publisher: WM.C. Brown Company Publishers
Published: 1961
Place of publication: Dubuque, Iowa
Language: eng
Format: Paperback
Number of pages: 262
Subjects: Butterflies -- North America