000 | 003390000a22001330004500 | ||
---|---|---|---|
001 | EST | ||
003 | 621.3.019 / G85 | ||
004 | M | ||
006 | m | ||
100 | _aGumhalter, Hans | ||
245 | _aPower supply systems in communications engineering: principles | ||
650 | _a<SISTEMAS DE TELECOMUNICACIONES><FUENTES DE ALIMENTACION> | ||
999 |
_c9735 _d9735 |