{"@context":{"owl":"http://www.w3.org/2002/07/owl#","bibo":"http://purl.org/ontology/bibo/","foaf":"http://xmlns.com/foaf/0.1/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/"},"@id":"https://ci.nii.ac.jp/ncid/BB07491386.json","@graph":[{"@id":"https://ci.nii.ac.jp/ncid/BB07491386#entity","@type":"bibo:Book","foaf:isPrimaryTopicOf":{"@id":"https://ci.nii.ac.jp/ncid/BB07491386.json"},"dc:title":[{"@value":"The four color theorem"}],"dc:creator":"by Joseph Miller Thomas","dc:publisher":[{"@value":"[Joseph Miller Thomas]"}],"dcterms:extent":"10 p","cinii:size":"26 cm","dc:language":"eng","dc:date":"1977","cinii:ncid":"BB07491386","prism:edition":"Final ed","cinii:ownerCount":"2","foaf:maker":[{"@id":"https://ci.nii.ac.jp/author/DA02663290#entity","@type":"foaf:Person","foaf:name":[{"@value":"Thomas, Joseph Miller"}]}],"bibo:owner":[{"@id":"https://ci.nii.ac.jp/library/FA001390","@type":"foaf:Organization","foaf:name":"東北大学 附属図書館 北青葉山分館","rdfs:seeAlso":{"@id":"https://opac.library.tohoku.ac.jp/opac/opac_openurl/?ncid=BB07491386"}},{"@id":"https://ci.nii.ac.jp/library/FA001415","@type":"foaf:Organization","foaf:name":"東北大学 附属図書館 工学分館","rdfs:seeAlso":{"@id":"https://opac.library.tohoku.ac.jp/opac/opac_openurl/?ncid=BB07491386"}}],"prism:publicationDate":["1977"],"cinii:note":["Supplement to the author's Systems and roots","Bibliography: p. 10","Booklet: A brief proof"],"dc:subject":["LCC:QA166","DC:513/.83"],"cinii:contentOfWorks":["A brief proof"],"foaf:topic":[{"@id":"https://ci.nii.ac.jp/books/search?q=Four-color+problem","dc:title":"Four-color problem"}]}]}