00446nam a2200157Ia 4500 230711s9999||||xx |||||||||||||| ||und|| ENG 624 BU-I Bureau of Indian Standard IS : 1172 1983 Code basic requirement for water supply,draiange and sanitation 3rd 1984 New Delhi Bureau of Indian Standard 22 Mechanical Engineering BK 0 0 0 0 C MCL MCL 0000-00-00 0 624 BU-I 7563 2023-08-17 14:41:20 2023-08-17 BK 7847 7847