000 00263nmm a2200085Ia 4500
008 220120s9999||||xx |||||||||||||||||und||
100 _aGarg, Vijay, K and Wilkes, Joseph, E
245 0 _aPrinciples of application of GSM
260 _aTata mcgraw hill company Ltd
_c2010
999 _c139552
_d139552