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| 2 | Ke L, Chunshan S, Velu S, “Hydrogen and Syngas Production and Purification Technologies” Wiley 2010 |
| 3 | Gupta, R.B., “Hydrogen fuel Production, Transport, and Storage” CRC Press, 2009 |
| 4 | The Hydrogen Economy: The Creation of the Worldwide Energy Web and the Redistribution of Power on Earth By: Jeremy Rifkin |
| 5 | Hydrogen Safety (Green Chemistry and Chemical Engineering),Paul Amyotte |