000 | 003960000a22001450004500 | ||
---|---|---|---|
001 | EST | ||
003 | 621.39 / S17 | ||
004 | M | ||
006 | m | ||
100 | _aStandard Electric, Research and Development Center | ||
245 | _aTelecommunication planning | ||
068 | _aEjemplar Inv. NÂș 14434 en DEPOSITO | ||
650 | _a<TELECOMUNICACIONES><ORGANIZACION DE EMPRESAS><COMERCIALIZACION | ||
999 |
_c15888 _d15888 |