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 "Beal, Carl H.","The decline and ultimate production of oil wells, with notes on the valuation of oil properties",,Government Printing Office,1919,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282272871644800