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| 260 | _bInstitute for Scientific Information | ||
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| 515 | _aSe reciben en disketes. A partir de 1998 se reciben en CD/ROM. | ||
| 594 | _aCOMPRA DIRECTA 1992/1996/1997/1998 | ||
| 310 | _aBims. | ||
| 593 | _a24-11-2000 | ||
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