TY  - RPRT
TI  - Geologic and biostratigraphic map of the Pierre Shale in the Colorado Springs-Pueblo area, Colorado
AU  - Glenn R. Scott
AU  - W. A. Cobban
PY  - 1986
DO  - 10.3133/i1627
UR  - https://pubs.usgs.gov/publication/i1627
ID  - i1627
ER  -