TY  - RPRT
TI  - Foraminifers and calcareous nannofossils of Tertiary strata in Maryland and Virginia: A summary
AU  - T. G. Gibson
AU  - Laurel M. Bybell
PY  - 1984
UR  - https://pubs.usgs.gov/publication/70221678
ID  - 70221678
ER  -