TY  - BOOK
AU  - Brawner,C.O.
AU  - Dorling,Ian P.F.
ED  - International Symposium on Stability in Coal Mining
TI  - Stability in coal mining: Proceedings of the First International Smposium on Stability in Coal Mining Vancouver, British Columbia, Canada 1978 
T2  - World Coal Book
SN  - 0879301082
U1  - 622.33 22
PY  - 1979///
CY  - San Francisco
PB  - Miller Freeman Publications
KW  - Minas de carbón
KW  - Congresos
KW  - Coal mines
KW  - Congresses
N1  - Includes index; Reference: page 490
ER  -