TY  - BOOK
AU  - Wade, Lewis V.
ED  - United States Department of the Interior.
TI  - Mine roof simulator: definition and discussion of parameters 
T2  - Report of investigations / Bureau of Mines, U.S. Department of the Interior
PY  - 1975///]
CY  - Washington, D.C.
PB  - U.S. Dept. of the Interior
KW  - Coal mines and mining
KW  - Simulation methods
ER  -