TY  - RPRT
TI  - Stratigraphy and ammonite fauna of the Graneros Shale and Greenhorn Limestone near Pueblo, Colorado
AU  - William Aubrey Cobban
AU  - G. R. Scott
PY  - 1972
DO  - 10.3133/pp645
UR  - https://pubs.usgs.gov/publication/pp645
ID  - pp645
ER  -