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Citations

Correspondence on optical instruments, 1919 - 1939, GBR/0180/RGO 8/38. Cambridge University Library.

Correspondence on optical instruments, 1919 - 1939, GBR/0180/RGO 8/38. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/99381 Accessed June 24, 2024.

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