IS:4248-1967. Indian standard specification for non-ignitable and self-extinguishing boards (with mineral base) for electrical purposes.
Bureau of Indian Standards[BIS]
IS:4248-1967. Indian standard specification for non-ignitable and self-extinguishing boards (with mineral base) for electrical purposes. - New Delhi Bureau of Indian Standards 1967 - 25p.
IS Code / B.I.S
IS:4248-1967. Indian standard specification for non-ignitable and self-extinguishing boards (with mineral base) for electrical purposes. - New Delhi Bureau of Indian Standards 1967 - 25p.
IS Code / B.I.S