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Description of the stratigraphy and structure of a quadrangle that contains some of the significant vanadium deposits of the Placerville district. Prepared on behalf of the U.S. Atomic Energy Commission and published with the permission of the Commission.
Includes entries for maps and atlases.
1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.