How to know the spring flowers;: Pictured-keys for determining the more common spring-flowering herbaceous plant with suggestions and aids for their study (Pictured-key nature series)

Twenty-First Printing, 1977.Library Of Congress Catalog Card Number: #A51-32.8-9/16" X 5-15/16" X 3/4". 194 pages.Wire Spiral-Bound. Softcover.Includes: charts, illustrations, index, pictured-glossary, sketches.Audience: General/trade.