Penn, W. S. (1966). Grp technology: :handbook to the polyster/ glass fibre plastic industry. Maclaren.
Chicago Edition CitationPenn, W S. Grp Technology: :handbook to the Polyster/ Glass Fibre Plastic Industry. London: Maclaren, 1966.
Deismireacht MLAPenn, W S. Grp Technology: :handbook to the Polyster/ Glass Fibre Plastic Industry. Maclaren, 1966.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.