00296nam a2200109Ia 4500008004100000041000800041082001400049100003000063245002400093260004700117650002200164230711s9999||||xx |||||||||||||| ||und||  aENG  a624bBU-I  aBureau of Indian Standard 0aIS : Gr 9 Pt I 1980  c1980aNew DelhibBureau of Indian Standard  aCivil Engineering