TY - CPAPER AU - Javad Gholamnejad TI - ESTIMATION OF ROCK MASS MODULUS USING ROCK MASS CLASSIFICATION SYSTEM T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference PY - 2011 DO - 10.5593/sgem2011/s02.116 PB - Stef92 Technology ER -