BS 01/205138 DC IEC 61249-4-1. Ed.1. Materials for printed boards and other interconnecting structures. Part 4: Sectional specification set for prepreg materials, unclad (for the manufacture of multilayer boards). Section 1: Epoxide woven E-glass prepreg of defined flammability (vertical burning test). Section 1: E

standard by BSI Group, 07/13/2001