000 00278nam a2200121Ia 4500
999 _c45518
_d45518
008 190719s9999 xx 000 0 und d
082 _a621.3 C851
100 _aCotton, H
245 0 _aElectrical Technology
260 _aLondon
_bPitman
_c1984
300 _a21X14
942 _cBK