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
Department van mineraal - en energiesake and Geological Survey (South Africa),Barberton,Gravitasie-uitgawe = Gravity edition,Government Printer,1986,Geologiese reeks : 1:250 000 = Geological series : 1:250 000,,,,https://cir.nii.ac.jp/crid/1130000798052228992