Bailey, Vernon, 1864-1942 A biological survey of North Dakota. I. Physiography and life zones. II. The mammals. By Vernon Bailey... - Washington, Govt. print. off., 1926. - vi, 226 p. illus. (maps) 21 pl. (incl. front.) on 13 l. 25 cm. LCCN: agr27000112 Subjects--Topical Terms: Animals--North Dakota. LC Class. No.: QL155 / .A4 no. 49