TY  - BOOK
AU  - Southwick,D.L.
AU  - Reed,John Calvin
AU  - Mixon,Robert B.
ED  - United States Geological Survey (U.S.)
TI  - The Chopawamsic Formation: a new stratigraphic unit in the Piedmont of northeastern Virginia 
T2  - Geological Survey bulletin
U1  - 551.7310975526 
PY  - 1971///
CY  - Washington, D.C.
PB  - United States Government Printing Office
KW  - Geology, Stratigraphic
KW  - Ordovician
KW  - Cambrian
KW  - Geology
KW  - Virginia
KW  - Prince William Co
KW  - Stafford Co
N1  - Bibliography: p. 10-11
ER  -