000 00308nam a2200133Ia 4500
008 160710s1947 xx 000 0 und d
082 _a621 BLA
100 _aBLALOCK,GROVER C.
245 _aDIRECT-CURRENT MACHINERY
250 _a1
260 _bMCGRAW-HILL BOOK C.
_c1947
300 _a366
942 _2ddc
_cB
999 _c7340
_d7340