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 United Nations. Dept. of International Economic and Social Affairs and United Nations. Economic Commission for Africa and Expert Group Meeting on Acquisition of Marine Surveying Technologies Acquisition of marine surveying technologies, Addis Ababa : report of the Expert Group Meeting on Acquisition of Marine Surveying Technologies, Addis Ababa, 19-23 October 1987 United Nations 1988 9211043034 https://ci.nii.ac.jp/ncid/BA06744605