The clays and shales of Virginia west of the Blue ridge
By: by H. Ries and R. E. Somers.
Contributors: Somers, Ransom Evarts, 1885- joint author.
Series: Virginia.  Geological survey.  Bulletin; no. 20
Publisher: University of Virginia
Published: 1920
Place of publication: Charlottesville
Language: eng
Number of pages: 118
Subjects: Clay -- Virginia; Shale
Notes: At head of title: Virginia Geological survey.  University of Virginia.  Thomas Leonard Watson, director.