A field guide to western butterflies
By: Paul Opler ; illustrated by Amy Bartlett Wright.
Contributors: Tilden, James W. 1904-
Edition: 2nd ed.
Series: Peterson field guide series
Publisher: Houghton Mifflin Co.
Published: 1998
Place of publication: Boston
Language: eng
Number of pages: 540
Subjects: Butterflies -- West (U.S.) -- Identification.
Other titles: Western butterflies
Notes: Includes bibliographical references (p. 503-508) and indexes.
Rev. ed. of: Field guide to western butterflies / James W. Tilden and Arthur Clayton Smith. 1986.
"Sponsored by the National Audubon Society ; the National Wildlife Federation, and the Roger Tory Peterson Institute".