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 Symposium on the Development of Deltaic Areas and United Nations. Economic Commission for Asia and the Far East,"Proceedings of the Second Symposium on the Development of Deltaic Areas : (held at Tokyo, Japan, 4 to 13 November 1969)",,United Nations,1969,Water resources series,,,,https://cir.nii.ac.jp/crid/1130000798334557184