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1
Q56048084-C58A7927-3EDE-45AA-B619-BC9E0322A2C9
Q56048084-C58A7927-3EDE-45AA-B619-BC9E0322A2C9
BestRank
Statement
http://www.wikidata.org/entity/statement/Q56048084-C58A7927-3EDE-45AA-B619-BC9E0322A2C9
The Solution of the Four-Color-Map Problem / Kenneth Appel and Wolfgang Haken. - (1977)
P31
Q56048084-C58A7927-3EDE-45AA-B619-BC9E0322A2C9
BestRank
Statement
http://www.wikidata.org/entity/statement/Q56048084-C58A7927-3EDE-45AA-B619-BC9E0322A2C9
rank
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type
BestRank
Statement
P31
scholarly article