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_a21st Century Science and Technology / _c21st Century Science Associates |
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| 260 | _aAsociación Lyndon Larouche, | ||
| 362 | _a2004 Vol.17 (4) 2005 Vol.18(1-3) | ||
| 500 | _ahttp://www.21stcenturysciencetech.com/espanol.html | ||
| 650 | _aCIENCIAS BASICAS | ||
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