IS:4249 - 1967 (with amendment no.1 - 1979) : Classification and Methods of Tests for Non-Ignitable and Self-Extinguishing Properties of Solid Electrical Insulating Materials
IS:4249 - 1967 (with amendment no.1 - 1979) : Classification and Methods of Tests for Non-Ignitable and Self-Extinguishing Properties of Solid Electrical Insulating Materials
- New Delhi BIS 1968
- 22p
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