Curiosa mathematica, by Charles L. Dodgson                                78586
  [Subtitle: Part I: A new theory of parallels]
  [Author: Charles L. Dodgson]
  [Link: https://www.gutenberg.org/ebooks/78586]
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Thanks to Aaron Adrignola, Laura Natal and the Online Distributed
Proofreading Team at https://www.pgdp.net (This book was produced from
images made available by the HathiTrust Digital Library.)

Regards,
Robert