Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAKAMATSU Takejiro and KAWASHIMA Munetsugu and TAKADA Jitsuya and MATSUSHITA Rokuji,Characteristics in Elemental Composition of Ferromanganese Concretions from Lake Biwa.,Japanese Journal of Limnology (Rikusuigaku Zasshi),0021-5104,The Japanese Society of Limnology,1993,54,4,281-291,https://cir.nii.ac.jp/crid/1390282679035862784,https://doi.org/10.3739/rikusui.54.281