TY  - BOOK
AU  - Ross,Clarence Samuel
TI  - Origin of the copper deposits of the Ducktown type in the southern Appalachian region
T2  - Geological Survey (U.S.). Geological Survey professional paper
AV  - TN443.A5 R6
PY  - 1935///
CY  - Washington
PB  - U.S. Gov't. Print. Off.
KW  - Copper mines and mining
KW  - Appalachian Region
KW  - Copper ores
N1  - At head of title:  United States Department of the Interior; Bibliography: p. 3-7
ER  -