1. Pennsylvanian formations of southwest Virginia Author/Creator: Miller, Ralph L. 1909-1991. (Ralph LeRoy) Publication/Creation: Washington : U.S. Govt. Print. Off, 1969 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1279-1285. Access & Availability: Loading
2. Postdepositional alteration of surface and near-surface minerals in selected coastal plain formations of the Middle Atlantic States Publication/Creation: Washington, D.C. : U.S. G.P.O., 1983 Resource Type: Book Access & Availability: Loading