Here are entered works on the private employment of convicts. Works on the employment, by one employer, of laborers under contract with another employer or with a contractor, and on the lending of laborers by one employer to another employer are entered under Contract system (Labor).
Here are entered comprehensive works on those countries having relatively low per capita incomes.This heading may be subdivided by those topical subdivisions used under names of regions, countries, etc., e.g. Developing countries--Economic conditions, and may be used as a geographic subdivision under those topics authorized for local subdivision, e.g. Technology--Developing countries.