IS : 2720 Pt XXIV 1976
Bureau of Indian Standard
IS : 2720 Pt XXIV 1976 - 2nd - New Delhi Bureau of Indian Standard 1983 - 11
Civil Engineering
624 / BU-I
IS : 2720 Pt XXIV 1976 - 2nd - New Delhi Bureau of Indian Standard 1983 - 11
Civil Engineering
624 / BU-I
