Engineering classification of rock mass: classification factors, Terzaghi뭩 method, RQD, RSR, and RMR

c_cosidx: 
260
c_moddate: 
2010-01-19 14:41:17
c_orderno: 
12
c_weekno: 
12
topics_long: 
Engineering classification of rock mass: classification factors, Terzaghi뭩 method, RQD, RSR, and RMR