Rigid PVC pipes and fittings for drainage installations = Grundstücksentwässerungsanlagen Abflussrohre und-forms tücke aus PVC hart, Polyvinylchlorid hart, für Abwasserleitungen.
Building Research Station (Great Britain)
Great Britain.Department of Scientific and Industrial Research.
Garston : Dept. of Scientific and Industrial Research,
1962.
German draft standard DIN 19531, May 1962.