TY  - BOOK
AU  - Singer, Donald A.
ED  - U.S. Geological Survey.
TI  - Mineral deposit density: an update 
SN  - 0607982527
PY  - 2001///
CY  - Reston, Va., Denver, CO
PB  - U.S. Dept. of the Interior, U.S. Geological Survey, For sale by U.S. Geological Survey, Information Services
KW  - Ore deposits
KW  - United States
KW  - Mines and mineral resources
N1  - Includes bibliographical references (p. 11-13)
ER  -