BS 3506 : 1969 : Specification for unplasticzed PVC pipe for industrial uses
- London B.S.I. 1969
- 21p.
STD811
BS 3506 : 1969
621.643.29 / : 678.743
STD811
BS 3506 : 1969
621.643.29 / : 678.743
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