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1324
Open
Frederik Wellmann
A. MS.
LOGIC (MS 339-1009)
Published in entirety as 1.417-520.
Categories, Mathematics and logic (and map problem see also Maps fourcolor problem), Thirdness
pp. 5-69 (pp. 1-4 missing), with 48 pp. of variants
1896~
900
G-c.1896-2
LOGIC / CATEGORIOLOGY
yes