A field guide to animal tracks / by Olaus J. Murie. Murie, Olaus Johan, 1889-1963. Animal tracks. Animals North America. Animals Central America. QL768 .M87 1975 591.5 2nd MUF Bibliography: p. 359-367. Includes bibliographical references and index. Boston : Houghton Mifflin, 1975, c1974. 1975, c1974. 1975 Text xxi, 375 p. : eng 9 The Peterson field guide series ; North America. Central America.