Hollister, N. 1876-1924. A systematic synopsis of the muskrats, by N. Hollister. - Washington, Govt. print. off., 1911. - 47 p. VI pl. (incl. front., fold. map) 23cm. - U.S. Dept. of agriculture. Bureau of biological survey. North American fauna no. 32 . Bibliography: p. 35-38. LCCN: agr11000496 Subjects--Topical Terms: Muskrat. LC Class. No.: QL155 / .A4 no. 32