TY  - RPRT
TI  - Birds of the Colorado Valley: A repository of scientific and popular information concerning North American ornithology: Part first, Passeres to Laniidæ, bibliographic appendix, seventy illustrations
AU  - Ferdinand Vandeveer Hayden
AU  - Elliott Coues
PY  - 1878
DO  - 10.3133/70039636
UR  - https://pubs.usgs.gov/publication/70039636
ID  - 70039636
ER  -