000 00290nam a2200109Ia 45e0
008 181001s1961 xx 000 0 und d
100 _aClayton A.E.
245 0 _aElectrical Engineering
260 _bLongmans
_c1961
300 _a490
942 _2ddc
_cBK
999 _c2433
_d2433