(1973). Specification for unplasticized PVC underground drain pipe and fittings. London: BSI.
Chicago Style CitationSpecification for Unplasticized PVC Underground Drain Pipe and Fittings. London: BSI, 1973.
MLA CitationSpecification for Unplasticized PVC Underground Drain Pipe and Fittings. London: BSI, 1973.
Warning: These citations may not always be 100% accurate.