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(Ex parte 171)
United States. Interstate Comm ...

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(Ex parte 171)
rules, standards and instructions for installation, inspection, maintenance, and repair of automatic block signal systems, interlocking, traffic control systems, automatic train stop, train control and cab signal systems and other similar appliances, methods and systems, effective October 1, 1950.

Published 1950 by U.S. Govt. Print. Off. in [Washington .
Written in English.

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48 p.
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Open Library

History Created December 11, 2009 · 2 revisions Download catalog record: RDF / JSON

January 18, 2010 Edited by WorkBot add subjects and covers
December 11, 2009 Created by WorkBot add works page