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- [5] A step change in technology INTERNATIONAL GAS ENGINEERING AND MANAGEMENT, 2006, 46 (04): : 10 - 12
- [6] KEEPING IN STEP WITH CHANGE IEEE TRANSACTIONS ON ENGINEERING WRITING AND SPEECH, 1970, EW13 (01): : 1 - 1
- [9] THE MICROFIBER STEP CHANGE JOURNAL OF THE SOCIETY OF DYERS AND COLOURISTS, 1992, 108 (09): : 369 - 371