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 United States. Assay Commission,"Proceedings of the Assay Commission 1917 : test of coinage executed and reserved during the calendar year 1916, also laws of the United States relating to the annual assay and rules for the organization and government of the Board of Assay Commissioners",,G.P.O.,1917,Document,,,,https://cir.nii.ac.jp/crid/1130282273222642432