title | ISBN-13 (ISBN-10) | year of publication |
---|---|---|
Aud Fld Gd Westn Bird | 978-0-394-21470-2 (0-394-21470-6) | 1989 |
National Audubon Society Field Guide to North American Birds, Western Region | 978-0-679-42851-0 (0-679-42851-8) | 1994 |
The Audubon Society Field Guide to North American Birds: Western Region | 978-0-394-41410-2 (0-394-41410-1) | 1977 |