ISBN 0385048181 books & textbook
The Owls of North America, North of Mexico: All the Species and Subspecies Illustrated in Color and Fully Described
Eckert, Allan W. Karalus, Karl E.
Doubleday Books /1974-08T Hardcover / 278 Pages
isbn-10: 0385048181 / isbn-13: 9780385048187
