Butterflies [and others] through binoculars field guide series
Print version: Dunkle, Sidney W., 1940- Dragonflies through binoculars : a field guide to dragonflies of North America. Oxford : Oxford University Press, c2000 viii, 266 pages Butterflies [and others] through binoculars field guide series ISBN 9780195112689
Includes bibliographical references (pages [251]-252)