TY  - BOOK
AU  - Howell,Arthur H.
TI  - Revision of the American pikas: (genus Ochotona)
T2  - U.S. Dept. of agriculture. Bureau of biological survey. North American fauna no. 47
AV  - QL115 .A4 no. 47
PY  - 1924///
CY  - Washington
PB  - Govt. print. off.
KW  - Pikas
ER  -