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597 × 489 pixels (0.29 MP)
5.1 cm × 4.1 cm @ 300 PPI
5040
Open
Frederik Wellmann
n.d.
A. MS. small notebook
plus another notebook ("Map Coloring Vol. V"), n.p., n.d.
Censua number, graphics, topical (topics or topology), fourcolor problem (Map), Mathematics
-
u
MS0156_006