BS-376-1 › Complete Document History
Railway signalling symbols
| Complete Current Edition: |
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2012 EDITION - Railway signalling symbols. Specification for schematic symb - July 31, 2012
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Obsolete Revision Information: |
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PD 1271 - AMENDMENT 1 - Sept. 1, 1951
1951 R96 EDITION - WITHDRAWN, 7/31/2012 - July 10, 1951 |