IS 5921-1: Metal-clad base materials for printed circuits for use in electronic and telecommunication equipment, Part 1: General requirements and test Bureau of Indian Standards
IS 5921-11: Metal clad base materials for printed circuits for use in electronic and telecommunication equipment, Part 11: Thin epoxide woven glass fabric copper clad laminated sheet, general purpose grade,for use in the fabrication of multilay Bureau of Indian Standards
IS 5921-5: Metal Clad Base Materials for Printed Circuits for Use in Electronic and Telecommunication Equipment, Part 5: Epoxide Cellulose Paper Copper Clad Laminated Sheet of Defined Flammability (vertical burning test) Bureau of Indian Standards