著者名	書名	版表示	出版者名	出版年	シリーズ名	番号	ISBN	ISSN	URL
Dutton, Geoffrey and International Advanced Study Symposium on Topological Data Structures for Geographic Information Systems and Harvard University. Laboratory for Computer Graphics and Spatial Analysis	Harvard papers on geographic information systems : first international advanced study symposium on topological data structures for geographic information systems		President and Fellows of Harvard College	1978					http://ci.nii.ac.jp/ncid/BA28155969