IS : 2720 Pt XXV 1982
Bureau of Indian Standard
IS : 2720 Pt XXV 1982 - 1st - New Delhi Bureau of Indian Standard 1982 - 7
Civil Engineering
624 / BU-I
IS : 2720 Pt XXV 1982 - 1st - New Delhi Bureau of Indian Standard 1982 - 7
Civil Engineering
624 / BU-I
