00618nam a2200193Ia 450000500170000000800460001703700110006304000080007404000080008204000080009004100080009804100080010608400080011410000450012224501710016726000090033830000100034770000670035720260430150201.0008  250103s9999    xx            000 0 eng d  aTheses  aCRL  beng  ceng  2eng  aeng  qCRL  aAzad Alquamar Au.; Dingh Somendra K. Gu. 0aDevelopment of correlations between various rockmass classification systems and evaluation of various support types for rail tunnel adits in parts of garhwal Himalaya  c2022  a234p.  aUniversity of Delhi. Facluty of Science. Department of Geology