00400nam a2200133Ia 4500008004100000041000800041082001400049100003000063245008400093250000800177260004700185300000700232650002700239230711s9999||||xx |||||||||||||| ||und||  aENG  a624bBU-I  aBureau of Indian Standard 0aIS : 1172 1983bCode basic requirement for water supply,draiange and sanitation  a3rd  c1984aNew DelhibBureau of Indian Standard  a22  aMechanical Engineering