1. Specification for metal-clad base materials for printed circuits. Phenolic cellulose paper copper-clad laminated sheet of high electrical quality, flame retardant grade: PF-CP-Cu-8 Part 8, (28th July 1972) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗