000
00259nam a22001097a 4500
100
_a
R.P SINGH
_a
SAPRE S.D
245
_a
COMMUNICATION SYSTEMS: ANALONG AND DIGITAL
250
_a
3 RD
260
_a
NEW DELHI
_b
MGH
_c
2012
300
_a
XIX, 750/-
942
_c
BK
999
_c
8698
_d
8698