Contributions to economic geology, 1906 : part I -- metals and nonmetals except fuels / United States Geological Survey ; S.F. Emmons, E.C. Eckel, geologists in charge.
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Other Authors: | , |
Format: | Government Document Book |
Language: | English |
Published: |
Washington [D.C.] :
Govt. Print. Off,
1907.
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Series: | Bulletin (Geological Survey (U.S.)) ;
no. 315. |
Subjects: |