IS: 1448 (P 61) - 1974; methods of test for petroleum and its products P 61 evaporation loss in greases 2-hour drying)
IS: 1448 (P 61) - 1974; methods of test for petroleum and its products P 61 evaporation loss in greases 2-hour drying)
- New Delhi BIS 1975
- 2p
/
/