IS:11809-1994. Indian standard lining for canals by stone masonry : code of practice.
Bureau of Indian Standards[BIS]
IS:11809-1994. Indian standard lining for canals by stone masonry : code of practice. - New Delhi Bureau of Indian Standards 1994 - 2p.
IS CODE / B.I.S
IS:11809-1994. Indian standard lining for canals by stone masonry : code of practice. - New Delhi Bureau of Indian Standards 1994 - 2p.
IS CODE / B.I.S