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| 041 | _aeng | ||
| 082 |
_a621.38 _bP |
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| 245 | _aTelecommunications : principles and practice | ||
| 260 |
_aLondon _bGeroge Newnes _c1961 |
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| 300 |
_a384p. _bill. _c19 cm. |
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| 501 | _aSR | ||
| 942 | _cRB | ||
| 999 |
_c86909 _d86909 |
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| 945 |
_a1 _bAdmin Admin _c1 _dNimal Hettiarachchi |
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