Here are entered works on the relation between alcoholic intoxication and traffic accidents. Works on drunk driving as a criminal offense are entered under Drunk driving.
Here are entered works on trade, both foreign and domestic. Works on the commerce of 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 position, e.g. 1. Canada--Commerce--United States. 2. United States--Commerce--Canada. --subdivision Commerce under names of countries, cities, etc., and ethnic groups