TY  - BOOK
AU  - Williams, W. Randolph
TI  - Mine mapping and layout
SN  - 01358535174
U1  - 622 
PY  - 1983///
CY  - New Jersy
PB  - Prentice-Hall Inc.
KW  - Mine Mapping
KW  - Mine Maps
KW  - Mine Surveying
ER  -