Specificaton for sandstone slabs for use in flooring IS : 3622
I.S.I
Specificaton for sandstone slabs for use in flooring IS : 3622 - Indian Standard Institute, Manak bhawan 1966 - 6
/ ISI
Specificaton for sandstone slabs for use in flooring IS : 3622 - Indian Standard Institute, Manak bhawan 1966 - 6
/ ISI