000
00287nam a2200121Ia 4500
008
220201s2008 xx 000 0 eng d
082
_a
621.384
_b
LEO
100
_a
Leon,W C
245
0
_a
Digital analog communication system
260
_a
delhi
_b
PHI
_c
2008
300
_a
751
942
_2
ddc
999
_c
37442
_d
37442