Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
United States. Bureau of Labor Statistics,Wages and hours of labor in gasoline filling stations and motor-vehicle repair garages: 1931,,"U.S. G.P.O.,For sale by the Supt. of Docs., U.S. G.P.O.",1933,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282270339093888