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
"Snyder, Ned H.","Analyses of samples of delivered coal, collected from July 1, 1915 to January 1, 1922 : with a chapter on the tidewater pool classifications",,Government Printing Office,1923,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000794613062784