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Two Isomorphs of the Four-Colour Problem - MaRDI portal

Two Isomorphs of the Four-Colour Problem (Q5543318)

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scientific article; zbMATH DE number 3258076
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Two Isomorphs of the Four-Colour Problem
scientific article; zbMATH DE number 3258076

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    Two Isomorphs of the Four-Colour Problem (English)
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    1967
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    topology
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