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 League of Nations. Secretariat. Economic and Financial Section,Survey of the direct and indirect means at the disposal of foreign buyers to enable them in a number of countries to ascertain the quality of the goods acquired by them,,League of Nations,1930,Series of League of Nations publications,,,,https://cir.nii.ac.jp/crid/1130282271479614464