IS : 2720 Pt II 1993
Bureau of Indian Standard
IS : 2720 Pt II 1993 - 1st - New Delhi Bureau of Indian Standard 1998 - 6
Civil Engineering
624 / BU-I
IS : 2720 Pt II 1993 - 1st - New Delhi Bureau of Indian Standard 1998 - 6
Civil Engineering
624 / BU-I
