TY  - RPRT
TI  - Depositional environment of Upper Cretaceous black sandstones of the Western Interior
AU  - Robert Stroud Houston
AU  - John F. Murphy
PY  - 1977
DO  - 10.3133/pp994a
UR  - https://pubs.usgs.gov/publication/pp994A
ID  - pp994A
ER  -