IS : 2720 Pt XXXIV 1972
Bureau of Indian Standard
IS : 2720 Pt XXXIV 1972 - 1st - New Delhi Bureau of Indian Standard 1984 - 10
Civil Engineering
624 / BU-I
IS : 2720 Pt XXXIV 1972 - 1st - New Delhi Bureau of Indian Standard 1984 - 10
Civil Engineering
624 / BU-I
