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
"Bear, L. M.","A geological reconnaissance of the area south-east of Embu : with coloured geological map : explanation of degree sheet 44, se. quadrant",,The government printer,1952,Geological survey of Kenya,,,,https://cir.nii.ac.jp/crid/1130000795068092544