TY  - RPRT
TI  - Field notes on birds observed in Dakota and Montana along the forty-ninth parallel during the seasons of 1873 and 1874
AU  - Elliott Coues
PY  - 1878
DO  - 10.3133/70159117
UR  - https://pubs.usgs.gov/publication/70159117
ID  - 70159117
ER  -