000 00276nam a2200121Ia 4500
008 160710s1978 xx 000 0 und d
082 _a621.462 WAL
100 _aWALKER, P.
245 _aDIRECT CURRENT MOTORS
260 _bTAB BOOKS
_c1978
300 _a252
942 _2ddc
_cB
999 _c44872
_d44872