00368nam 2275472 450000100060000000300230000600500090002900800410003808200130007907200190009202000180011110000150012926000220014425000060016624500400017275472StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a621.3745 aelectric power a0-07-451838-0 aA S HORNBY bMSGRAWHILL c1989 a5 aelectric power distribution systems