000 00315nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _bUGC
100 _aU G C ( E T & T) Margdarshan, New Delhi
245 0 _aSequential cicuits
260 _aNew Delhi
_bE.T & T
_cVedio Cassett
300 _a17.23 min
942 _2ddc
999 _c25317
_d25317