TY  - BOOK
AU  - Henkes,William C.
ED  - United States.
TI  - Satellite monitoring of open pit mining operations
U1  -  523.391 
PY  - 1971///
CY  - Washington, D.C.
PB  - U.S. Government Printing Office
KW  - Artificial Satellite
KW  - Lunar geology
KW  - Lunar petrology
N1  - Bureau of mines
ER  -