TY  - RPRT
TI  - I. Sexual, individual, and geographical variation in leucosticte tephrocotis, II.Geographical variation among North American mammals, especially in respect to size
AU  - J. A. Allen
PY  - 1876
DO  - 10.3133/70157321
UR  - https://pubs.usgs.gov/publication/70157321
ID  - 70157321
ER  -