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 "Hopfen, Hans Joachim",Farm implements for arid and tropical regions,Rev. ed,Food and Agriculture Organization of the United Nations,1969,FAO agricultural development paper,,,,https://cir.nii.ac.jp/crid/1130000795700932096