TY  - RPRT
TI  - Palynological investigations in the upper Cretaceous and Tertiary of the Mississippi embayment region - IV
AU  - Robert H. Tschudy
PY  - 1967
DO  - 10.3133/ofr67222
UR  - https://pubs.usgs.gov/publication/ofr67222
ID  - ofr67222
ER  -