TY  - BOOK
AU  - Ries,Heinrich
TI  - Economic geology
AV  - TN23 .R53 1937
U1  - 553 
PY  - 1937///
CY  - New York, London
PB  - J. Wiley & Sons, inc., Chapman & Hall, limited
KW  - Geology, Economic
KW  - Local
KW  - Mines and mineral resources
KW  - United States
N1  - Includes "References."
ER  -