TY  - BOOK
AU  - Hustrulid,William A.
AU  - Johnson,G.A.
ED  - U. S. Symposium on Rock Mechanics Contributions and Challenges
TI  - Rock mechanics contributions and challenges: proceedings of the 31st U. S. Symposium 
SN  - 9061911230
PY  - 1990///
CY  - Rotterdam
PB  - A. A. Balkema
KW  - Rock mechanics
KW  - Congresses
N1  - 'Colorado School of Mines/Golden/18-20 June 1990
ER  -