Paul A Opler
Author
Series
Publisher
Houghton Mifflin Company
Pub. Date
1999.
Edition
Second edition.
Description
Contains descriptions of 590 species of butterflies found in western North America, discussing their habitats, caterpillars, the plants they use, and flight periods; and includes range maps, photographs, and illustrations.
Author
Series
Service in action volume no. 5.504
Publisher
Colorado State University Cooperative Extension
Pub. Date
1994.