01211nam0-2200313---450-99000989742040332120140923150250.0000989742FED01000989742(Aleph)000989742FED0100098974220140923d1973----km-y0itay50------baengUSa-------101yyNew orizons in rock mechanicsproceedings fourteenth Symposium on rock mechanics held at the Pennsylvania State University University Park, Pennsylvania, june 11-14, 1972edited by H. Reginald Hardy jr. and Robert Stefankosymposium sponsored jointly by U.S. National Committee on Rock MechanicsNew YorkAmerican Society of Civil Engineering1973IX, 773 p.ill.24 cmMeccanica delle rocceConvegniHardy,Reginald H.<jr.>Stefanko,RobertSymposium on rock mechanics14.<1972 ;University Park, Pennsylvania>523738ITUNINARICAUNIMARCBK990009897420403321ZA 8/14bis11590DINGEDINGENew orizons in rock mechanics829274UNINA