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

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