The Four Color Problem. By Oystein Ore. Pp. ix, 258. 86s. 1967. Monographs in Pure and Applied Mathematics 27. (Academic Press, New York and London.)
- 1 February 1968
- journal article
- Published by Cambridge University Press (CUP) in The Mathematical Gazette
- Vol. 52 (379) , 89
- https://doi.org/10.2307/3614513
Abstract
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