000 00282nam a22001217a 4500
082 _a621.3133 LAN'T
100 _aLANGSDORF, D. S
_959122
245 _aTHEORY ALTERNATIN CURRENT MACHINERY
250 _a2ND
260 _aNEWYORK
_bMCGRAW HILL
_c1955
300 _a666P
942 _cBK
999 _c569172
_d569172