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| 245 | 0 | 0 | _aBig challenges in the new millenium |
| 270 | _a12/09/06 ; 15/07/02 | ||
| 300 | _a1 p. | ||
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_tWorld Oil _gVol. 220, no. 12 (dec. 1999); p. 39-40 |
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_aKelly, Paul L. _910959 |
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_aKelly, Paul L. _910959 |
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