TY  - BOOK
AU  - Adler, Lawrence,
AU  - Sun, Meng-Cherng,
TI  - Ground control in bedded formations
U1  - 622 ADL 
PY  - 1968///
CY  - Blacksburg
PB  - Virginia Polytechnic Institute
KW  - Mining engineering
N1  - Includes bibliography
ER  -