00454nam a2200169 a 450000500170000008200130001710000220003024500370005226000320008930000220012163000160014363000130015996400160017299700170018899900150020595200640022020251202164249.0  a620bSME  aSmeaton,Robert W.  aSwitch gear and control handbook  aNew YorkbMcGraw Hillc1977  a39 p.c24 cm.bHB  aSwitch gear  ahandbook  bcdefg_  a4158 LIBSC C  c5428d5428  00104070aPUbPUd1998-06-26g80.95l0o620 SMEp4158yBK