Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Munroe, Charles Edward","Regulation of explosives in the United States with especial reference to the administration of the explosives act of October 6, 1917 by the Bureau of Mines",,Government Printing Office,1921,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000793743311104