Description
Item Description: | "Sponsored by the National Audubon Society, the National Wildlife Federation, and the Roger Tory Peterson Institute." |
Physical Description: | xviii, 450 p., [98] p. of plates : ill. (some col.), maps ; 20 cm. |
Bibliography: | Includes bibliographical references (p. 361-370) and index. |
ISBN: | 0395370221 : 0395583896 (pbk.) : |