TY  - RPRT
TI  - Stratigraphic revision of upper Miocene and lower Pliocene beds of the Chesapeake Group, middle Atlantic Coastal Plain
AU  - Lauck W. Ward
AU  - Blake W. Blackwelder
PY  - 1980
DO  - 10.3133/b1482d
UR  - https://pubs.usgs.gov/publication/b1482D
ID  - b1482D
ER  -