IS : 2141 Pt. 2- 1966 . Specification for wooden flush door shthern cellular & hollow cor types
Indian Standard Institute
IS : 2141 Pt. 2- 1966 . Specification for wooden flush door shthern cellular & hollow cor types - New Delhi Indian Standard Institute 1967 - 8
/ ISI
IS : 2141 Pt. 2- 1966 . Specification for wooden flush door shthern cellular & hollow cor types - New Delhi Indian Standard Institute 1967 - 8
/ ISI