Butterflies of Oregon, Their Taxonomy, Distribution, and Biology By Andrew D. Warren C.P. Gillette Museum of Arthropod Diversity, Dept. of Bioagricultural Sciences and Pest Management, Colorado State University, 2005 ISBN: None Available Cite: 1914507 with citation markup [cite:1914507]
408 pages
Book / paper is referenced extensively by other authors (Pyle, James, Nunnallee, etc.)
in their butterfly books about Cascadia / Pacific Northwest.
|