TY  - BOOK
T1  - The Chopawamsic Formation--a new stratigraphic unit in the Piedmont of northeastern Virginia,
DA  - 1971]
CY  - [Washington,
AU  - Southwick, D. L.
AU  - Reed, John Calvin,
AU  - Mixon, Robert B.,
CN  - QE75
CN  - QE75
PB  - U.S. Govt. Print. Off.,
PP  - [Washington,
PY  - 1971]
ID  - 235223
KW  - Geology, Stratigraphic
KW  - Geology, Stratigraphic
KW  - Geology
KW  - Geology
TI  - The Chopawamsic Formation--a new stratigraphic unit in the Piedmont of northeastern Virginia,
ER  -