000 00487nam a22001697a 4500
008 230615b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a621.39
_bP1
100 _aDodd, Annable Z
_911780
245 _aEssential guide to telecommunications
250 _a3rd ed.
260 _aU.S.A.:
_bPrentice Hall PTR,
_c2002
300 _axxiv, 500p.
650 _aTelecommunications
653 _aDigital
942 _2udc
_cBK
999 _c43836
_d43836