Citations
"Instructions for the Installation and Maintenance and Alterations of Track Circuits", 1929, GBR/3296/Maps/Maps.RLY.1619, Maps.RLY.1619. Cambridge University Library. |
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"Instructions for the Installation and Maintenance and Alterations of Track Circuits", 1929, GBR/3296/Maps/Maps.RLY.1619, Maps.RLY.1619. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/265729 Accessed October 07, 2024. |