Trade And Professional Associations -- See Trade associations Here are entered works on associations devoted to the interests of particular trades or professions, without special regard to the relations of employers and employees. --subdivision Societies, etc. under professions, trades and industries, and names of individual organizations
Trade Free -- See Free trade Here are entered works on trade between countries, free from government restrictions or duties.
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Trade International -- See International trade Here are entered works on trade among nations. Works on foreign trade of specific countries, cities, etc. are entered under headings of the type [place]--Commerce, further subdivided by place, if appropriate. If so subdivided, a second heading is assigned with the place names in reverse positions, e.g. 1. Canada--Commerce--United States. 2. United States--Commerce--Canada.