000 00264nam a2200085Ia 4500
008 150310s9999 xx 000 0 und d
100 _aHANS GUMHALTER
245 _aPOWER SUPPLY SYSTEMS IN COMMUNICATION ENGINEERING. Pt-I : Principles
260 _c1989
_bWILEY EASTERN LTD
999 _c23744
_d23744