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Citations

‘300th Anniversary of The Principia Mathematica by Sir Isaac Newton’: stamp set, 1987-03-24, GBR/0180/RGO 97/7. Cambridge University Library.

‘300th Anniversary of The Principia Mathematica by Sir Isaac Newton’: stamp set, 1987-03-24, GBR/0180/RGO 97/7. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/107515 Accessed June 21, 2024.

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