000 00271nam a22001097a 4500
082 _a621.3132 LAN'P
100 _aLANGSDORF, ALEXANDER S
_960125
245 _aPRINCIPLES OF DIRECT CURRENT MACHINES
260 _aNEWYORK
_bMCGRAW HILL
_c1959
300 _a363P
942 _cBK
999 _c585003
_d585003