TY  - RPRT
TI  - Palynology of the Cretaceous-Tertiary boundary in the northern Rocky Mountain and Mississippi Embayment regions
AU  - Robert H. Tschudy
PY  - 1970
DO  - 10.1130/spe127-p65
UR  - https://pubs.usgs.gov/publication/70226482
ID  - 70226482
ER  -