Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Wakefield, Roberta P. and United States. Bureau of Foreign and Domestic Commerce",Shipment of Samples and advertising matter to the British empire,,"United States Department of Commerce, Bureau of Foreign and Domestic Commerce",1928,Trade information bulletin,,,,https://cir.nii.ac.jp/crid/1130294319267942051