000 | 00478nam a2200193Ia 4500 | ||
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008 | 221105s9999 xx 000 0 und d | ||
020 | _a0070280401 | ||
041 | _aENGLISH | ||
082 | _a621.384 | ||
082 | _bROB | ||
100 | _aROBERT K HELDMAN | ||
245 | 0 | _aINFORMATION TELECOMMUNICATIONS: NETWORKS, PRODUCTS, AND SERVICES | |
260 | _bMCGRAW HILL BOOK COMPANY | ||
260 | _c1990 | ||
300 | _a393 | ||
650 | _aELECTRONICS | ||
650 | _bTELECOMMUNICATION | ||
942 | _cBK | ||
999 |
_c2024 _d2024 |