Friedrich Haag
Friedrich Haag (20 August 1856 – 8 December 1941) was a pioneering German crystallographer.
An article written by Haag in the (a German crystallography journal) was used by M. C. Escher in his study of tessellation.
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Wikipedia
Friedrich Haag (20 August 1856 – 8 December 1941) was a pioneering German crystallographer.
An article written by Haag in the (a German crystallography journal) was used by M. C. Escher in his study of tessellation.