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 "Krug, C. A. and Poerck, R. A. de",World coffee survey,,Food and Agriculture Organization of the United Nations,1968,FAO agricultural studies,,,,https://cir.nii.ac.jp/crid/1130000797589667840