TY  - RPRT
TI  - Stratigraphy of the Calvert, Choptank, and St. Marys Formations (Miocene) in the Chesapeake Bay area, Maryland and Virginia
AU  - Lauck W. Ward
AU  - George W. Andrews
PY  - 2008
UR  - https://pubs.usgs.gov/publication/70208744
ID  - 70208744
ER  -