TY  - BOOK
AU  - Johnston,P.M.
TI  - Ground-water supplies in shale and sandstone in Fairfax, Loudoun, and Prince William Counties, Virginia
AV  - QE75 .C5 no. 424
PY  - 1960///
CY  - Washington
PB  - [U.S. Geological Survey]
KW  - Water-supply
KW  - Virginia
KW  - Groundwater
KW  - Borings
KW  - Water
KW  - Composition
KW  - Geology
KW  - Geology, Stratigraphic
KW  - Triassic
N1  - Errata slip inserted; Bibliography: p. 6-7
ER  -