000 | 00354nam a2200157Ia 4500 | ||
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008 | 240618s9999||||xx |||||||||||||| ||und|| | ||
020 |
_aNCST _c36 |
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040 | _aMAIN | ||
082 | _a335 | ||
100 |
_aCLARK,A.P _937785 |
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245 | 0 | _aPRINCIPLES OF DIGITAL DATA TRANSMISSION | |
250 | _a2 | ||
260 |
_bOTH _c1983 _aLONDON |
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300 | _b300 | ||
942 | _cBK | ||
999 |
_c44647 _d44647 |