Specification for betumen mastic for taking & Damp proofing of roofs IS : 5871
I.S.I
Specification for betumen mastic for taking & Damp proofing of roofs IS : 5871 - Indian Standard Institute, Manak bhawan 1971 - 8
/ ISI
Specification for betumen mastic for taking & Damp proofing of roofs IS : 5871 - Indian Standard Institute, Manak bhawan 1971 - 8
/ ISI