Citations
'Stepping on' tests on chronograph plate, undated [c.1950s], GBR/0180/RGO 43/188, Box 20: RGO 43/187-200: Series GBR/0180/RGO 43. Cambridge University Library. |
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'Stepping on' tests on chronograph plate, undated [c.1950s], GBR/0180/RGO 43/188, Box 20: RGO 43/187-200: Series GBR/0180/RGO 43. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/2038306 Accessed May 19, 2025. |