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| 035 | _aUPN01000090744 | ||
| 100 | _aISAACSON, Stephen L. | ||
| 222 | _aJOURNAL OF LEARNING DISABILITIES | ||
| 245 | _aOpen systems as seen on the street and from the fourteenth floor | ||
| 300 | _a326-329 | ||
| 362 | _a1993 Vol. 26, no. 5, may. | ||
| 653 | 0 | _aCIENCIAS NATURALES | |
| 653 | 0 | _aCIENCIAS SOCIALES | |
| 653 | 0 | _aCONDUCTA | |
| 653 | 0 | _aINVESTIGACION CIENTIFICA | |
| 904 |
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| 905 | _aArticulo | ||
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