Richard Spellenberg
Books
- Trees of Eastern North America
- Trees of Western North America
- The sunflower family
- Audubon Wild Flwrs-West
- Sonoran Desert Wildflowers, 2nd
- National Audubon Society field guide to North American wildflowers, western region
- Sonoran Desert Wildflowers
- Sonoran Desert wildflowers
- Trees of Eastern North America (Princeton Field Guides)
- The Audubon Society field guide to North American wildflowers, western region
Author data: Open Library