IS : 269 1989 Ordinary portland cement 83 grade specification
Bureau of Indian Standard
IS : 269 1989 Ordinary portland cement 83 grade specification - 4th - New Delhi Bureau of Indian Standard 1990 - 7
Electrical Engineering
624 / BU-I
IS : 269 1989 Ordinary portland cement 83 grade specification - 4th - New Delhi Bureau of Indian Standard 1990 - 7
Electrical Engineering
624 / BU-I
