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Vascular Plants of West-Central Montana - Identification Guidebook
Flora of the Pacific Northwest
Sierra Birds - A Hiker's Guide
Smithsonian Handbooks Birds of North America Western Region
Enter the Forest: A Guide to the Angeles National Forest
Wyoming Mountain Ranges
Fire Mountains of the West
The Illustrated Companion to Gleason and Cronquist’s Manual. Illustrations of the Vascular Plants of Northeastern United States and Adjacent Canada.
Cataclysms on the Columbia
The Jepson Manual. Higher Plants of California
Alpine and Subalpine Vegetation of the Wallowa, Seven Devils and Blue Mountains
Plant Identification Terminology. An Illustrated Glossary.
Northwest Exposures. A Geologic Story of the Northwest
A Field Guide To The Plants of Arizona
A Field Manual of the Ferns & Fern-Allies of the United States & Canada
Alpine Wildflowers of the Rocky Mountains
Marin Flora
Flora of Steens Mountain
Manual of Vascular Plants of Northeastern United States and Adjacent Canada
The Wallowa Mountains, A Natural History Guide