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References
- ↑ van Helden, Albert (1976). "The Importance of the Transit of Mercury of 1631". Journal for the History of Astronomy. 7: 1. Bibcode:1976JHA.....7....1V. doi:10.1177/002182867600700101. S2CID 22091697.
- ↑ Norman, Jeremy. "The First Book to Contain Images of Organisms Viewed through the Microscope (1630)". History of Knowledge. Retrieved 2014-12-02.
- ↑ Richardson, Matthew (2001). The Penguin Book of Firsts. New Delhi: Penguin Books India. ISBN 0-14-302771-9.
- ↑ L'Anthropologie (in French). Masson. 1894. p. 270.