A field guide to Pacific States wildflowers : field marks of species found in Washington, Oregon, California, and adjacent areas : a visual approach arranged by color, form, and detail / text by Theodore F. Niehaus ; ill. by Charles L. Ripper ; sponsored by the National Audubon Society and National Wildlife Federation.
| Author/creator | Niehaus, Theodore F. |
| Other author | Ripper, Charles L. |
| Format | Book |
| Publication Info | Boston : Houghton Mifflin, 1976. |
| Description | 432 pages : illustrations ; 19 cm. |
| Subjects |
| Series | Peterson field guide series ; 22 Peterson field guide series 22. ^A82968 |
| General note | Includes index. |
| LCCN | 76005873 |
| ISBN | 0395216249 |