Euclid or Einstein
Subtitle: a proof of the parallel theory and a critique of metageometry
By: by J.J. Callahan ...
Publisher: The Devin-Adair Company
Published: 1931
Place of publication: New York
Language: eng
Subjects: Einstein, Albert, 1879-1955.; Parallels (Geometry); Geometry, Non-Euclidean.; Euclid's Elements.