Revision of the American pikas (genus Ochotona)
Howell, Arthur H. 1872-1940.
Revision of the American pikas (genus Ochotona) By Arthur H. Howell. - Washington, Govt. print. off., 1924. - iv, 57, [1] p. illus. (maps) VI pl. (incl. front) on 4 l. 24cm. - U.S. Dept. of agriculture. Bureau of biological survey. North American fauna no. 47 .
agr24000746
Pikas.
QL115 / .A4 no. 47
I 49.30:47
Revision of the American pikas (genus Ochotona) By Arthur H. Howell. - Washington, Govt. print. off., 1924. - iv, 57, [1] p. illus. (maps) VI pl. (incl. front) on 4 l. 24cm. - U.S. Dept. of agriculture. Bureau of biological survey. North American fauna no. 47 .
agr24000746
Pikas.
QL115 / .A4 no. 47
I 49.30:47