IS:12592-(Pt.2)-1991. Indian standard precast concrete manhole covers and frames specification. Pt.2 : frames.
Bureau of Indian Standards[BIS]
IS:12592-(Pt.2)-1991. Indian standard precast concrete manhole covers and frames specification. Pt.2 : frames. - New Delhi Bureau of Indian Standards 1991 - 7p.
ENG
IS CODE / B.I.S
IS:12592-(Pt.2)-1991. Indian standard precast concrete manhole covers and frames specification. Pt.2 : frames. - New Delhi Bureau of Indian Standards 1991 - 7p.
ENG
IS CODE / B.I.S