| 000 | 00421nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 210420s9999 xx 000 0 und d | ||
| 020 | _a968-24-0162-3 | ||
| 040 |
_aBPGM _bspa |
||
| 041 | _aspa | ||
| 245 | 0 | _aEL SISTEMA DE LOS NUMEROS RACIONALES | |
| 260 |
_bTRILLAS _c1970 |
||
| 336 |
_2rdacontent _atexto _btxt |
||
| 337 |
_2rdamedia _asin mediación _bn |
||
| 338 |
_2rdacarrier _avolumen _bnc |
||
| 942 |
_cGENERAL _2ddc |
||
| 999 |
_c19624 _d19624 |
||