TY  - BOOK
AU  - Spalding,Jack
TI  - Deep Mining : An Advanced Textbook For Graduates In Mining And For Practising Mining  Engineers
U1  - 622.3 19
PY  - 1949///
CY  - London
PB  - Mining Publications Ltd.
KW  - Mining Engineering
KW  - Mining Geology
N1  - Includes indexs (p.: 403 - 406 )
ER  -