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 "Silfverberg, Lennart",Chemical determination of soil organic matter : a critical review of existing methods,,[Ivar Haeggströms],1957,Proceedings,,,,https://cir.nii.ac.jp/crid/1130282272344667008