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. Bureau of the Census,"Copper ores, lead and zinc ores, gold ores, and silver ores : industries 1021, 1031, 1041, and 1044",,"The Bureau : For sale by Superintendent of Documents, U.S. Government Printing Office",1995,1992 census of mineral industries : industry series,,,,https://cir.nii.ac.jp/crid/1130282269905098752