| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The American Bird Conservancy Guide to the 500 Most Important Bird Areas in the United States: Key Sites for Birds and Birding in All 50 States | 978-O-8129-7O36-4 (O-8129-7O36-5) | 2003 | George H. Fenwick · M. J. A. Parr · Nature Conservancy (U. S.) |