TY  - RPRT
TI  - Mineralogy and petrology of the Cretaceous- Tertiary boundary clay bed and adjacent clay-rich rocks, Raton Basin, New Mexico and Colorado.
AU  - R. M. Pollastro
AU  - C. L. Pillmore
PY  - 1987
DO  - 10.1306/212f8b61-2b24-11d7-8648000102c1865d
UR  - https://pubs.usgs.gov/publication/70014801
ID  - 70014801
ER  -