00329nam a2200133Ia 4500008004100000041000800041082001400049100003000063245001900093250000800112260004700120300000600167650002200173230711s9999||||xx |||||||||||||| ||und|| aENG a624bBU-I aBureau of Indian Standard 0aIS : 2505 1992 a1st c1992aNew DelhibBureau of Indian Standard a4 aCivil Engineering