IS:9872-1981. Indian standard specification for precast concrete septic tanks.
Indian Standards Institution[ISI]
IS:9872-1981. Indian standard specification for precast concrete septic tanks. - New Delhi Indian Standards Institution 1981 - 13p.
ENG
IS Code / I.S.I
IS:9872-1981. Indian standard specification for precast concrete septic tanks. - New Delhi Indian Standards Institution 1981 - 13p.
ENG
IS Code / I.S.I