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https://www.scirp.org/reference/ReferencesPapers?ReferenceID=1808265
Yaglom, I.M. (1979) A Simple Non-Euclidean Geometry and Its Physical Basis. Springer-Verlag, New...
Yaglom, I.M. (1979) A Simple Non-Euclidean Geometry and Its Physical Basis. Springer-Verlag, New York.
i m
euclidean geometry
yaglom
simple
non