BS 1194 : 1969 : Specification for concrete porous pipes for under-drainage
- London B.S.I. 1969
- 22p.
STD310
BS 1194 : 1969
691.327-462:666.973;696.133 /
STD310
BS 1194 : 1969
691.327-462:666.973;696.133 /
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