36 books • 1 series
Mexico, 1962, [numbers 9657-9727]; 580
Oregon, Nevada, 1959, [numbers 8581-8797]; 616
An Integrated System of Classification of Flowering Plants
Vascular Flora of the Southeastern United States
How to Know the Seed Plants
Flora of the Pacific Northwest
Basic Botany
Introductory Botany
Evolution and Classification of Flowering Plants (Riverside Study in Biology)
The Natural Geography of Plants
Manual of Vascular Plants
Vascular Plants of the Pacific Northwest