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Electric railroads, Power supply, Automation, Conservation, Electric controllers, Electric current rectifiers, Electric driving, Electric power, Electric transformers, Electronic equipment, Energy conservation, Equipment and supplies, Industries, Local transit, Management, Substations, Thyristors, TransportationID Numbers
- OLID: OL1100573A
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| August 19, 2008 | Edited by an anonymous user | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |