00329nam a2200133Ia 4500008004100000041000800041082001400049100003000063245001900093250000800112260004700120300000600167650002200173230711s9999||||xx |||||||||||||| ||und||  aENG  a624bBU-I  aBureau of Indian Standard 0aIS : 5816 1971  a1st  c1971aNew DelhibBureau of Indian Standard  a9  aCivil Engineering