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 "Groten, Erwin",Principles and conventional methods,,F. Dümmler,1979,Geodesy and the earth's gravity field,,3427783715,,https://cir.nii.ac.jp/crid/1130282272485092864