000
00257nam a2200109Ia 4500
008
220201s2007 xx 000 0 eng d
100
_a
Chen
245
0
_a
Adavance communication system
260
_a
New Delhi
_b
Springer
_c
2007
300
_a
610
942
_2
ddc
999
_c
65673
_d
65673