000 00287nam a2200121Ia 4500
008 220201s2008 xx 000 0 eng d
082 _a621.384
_bLEO
100 _aLeon,W C
245 0 _aDigital analog communication system
260 _adelhi
_bPHI
_c2008
300 _a751
942 _2ddc
999 _c37442
_d37442