IS:4351-2003. Indian standard steel door frames-specification (Second revision).
Bureau of Indian Standards[BIS]
IS:4351-2003. Indian standard steel door frames-specification (Second revision). - New Delhi Bureau of Indian Standards 2003 - 8p.
IS CODE / B.I.S
IS:4351-2003. Indian standard steel door frames-specification (Second revision). - New Delhi Bureau of Indian Standards 2003 - 8p.
IS CODE / B.I.S