Murie, Olaus Johan, 1889-1963. A field guide to animal tracks. Illustrated by the author. - Boston, Houghton Mifflin, 1954. - xxii, 374 p. illus. 20 cm. - The Peterson field guide series, 9 . Bibliography: p. 359-367. Subjects--Topical Terms: Animal tracks.Zoology--North America.Zoology--Central America. LC Class. No.: SK282 / .M8