000 00284nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a621.3
_bSHE
100 _aShepherd, J
245 0 _aHigher electrical engineering
250 _aEd.2
260 _aLondon
_bELBS
_c1970
942 _cBK
999 _c30738
_d30738