[图书][B] Geology of the Waterford quadrangle, Virginia and Maryland, and the Virginia part of the Point of Rocks quadrangle
WC Burton, AJ Froelich, JS Pomeroy, KY Lee - 1995 - books.google.com
Page 1 QE75 U5 no. 2095 Geology of the Waterford Quadrangle, Virginia and Maryland,
and the Virginia Part of the Point of Rocks Quadrangle US GEOLOGICAL SURVEY …
and the Virginia Part of the Point of Rocks Quadrangle US GEOLOGICAL SURVEY …