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
"Speck, Heinrich","Mount Kenya area : ecological and agricultural significance of the soils, with 2 soil maps",,"University of Berne, Switzerland, Institute of Geography",1983,Geographica Bernensia,,3906290018,,https://cir.nii.ac.jp/crid/1130282268677654784