00559nam a2200169Ia 4500008004100000041000800041082001400049100003000063245009500093250000800188260004700196300000600243650002200249942000700271952009600278999001500374230711s9999||||xx |||||||||||||| ||und||  aENG  a624bBU-I  aBureau of Indian Standard 0aSI : 6922 1973bCriteria for safety and design of structures subject to underground blasts  a1st  c1973aNew DelhibBureau of Indian Standard  a8  aCivil Engineering  cBK  001040708RaMCLbMCLd0000-00-00l0o624 BU-Ip7749r2023-08-17 14:41:29w2023-08-17yBK  c7990d7990