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Geochemical and Geological Reconnaissance in the Seventymile River Area, Alaska
The use of physical characteristics of peat and geologic settings of the deposits as guides to peat resources.
Mineral Resources of the Uncompahgre Primitive Area, Colorado
An evaluation of the mineral potential of the area.
Bibliography of North American Geology
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.
