00330nam a2200133Ia 4500008004100000041000800041082001400049100003000063245001800093250000800111260004700119300000800166650002200174230711s9999||||xx |||||||||||||| ||und|| aENG a624bBU-I aBureau of Indian Standard 0aIS : 800 1985 a1st c1985aNew DelhibBureau of Indian Standard a137 aCivil Engineering