| 000 | 00341nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 210422s9999 xx 000 0 und d | ||
| 020 | _a968-23-1479-8 | ||
| 041 | _aESPAÑOL | ||
| 082 |
_a _b |
||
| 245 | 0 |
_aINVESTIGACION E INFORMACION CIENTIFICAS EN MEXICO _b |
|
| 260 |
_aMEXICO _bUNIVERSIDAD NACIONAL AUTONOMA DE MEXICO _c1988 |
||
| 942 | _cBK | ||
| 999 |
_c37966 _d37966 |
||