00341nam a2200133Ia 4500008004100000041000800041082001400049100003000063245003000093250000800123260004700131300000700178650002200185230711s9999||||xx |||||||||||||| ||und||  aENG  a624bBU-I  aBureau of Indian Standard 0aIS : 2720 Pt XXXVIII 1976  a1st  c1987aNew DelhibBureau of Indian Standard  a25  aCivil Engineering