"third world" and (dictionar? or encyclopedia?)
"developing countries" and (dictionary or dictionaries)
CIA World Factbook
Provides country reports including statistics, maps and an introduction to the geography, people, government, economy, communications, transportation, military and international relations of each country.
Development, Trade and the WTO: A Handbook
This handbook offers guidance on the design of trade policy reform, surveys key disciplines and the functioning of the World Trade Organization (WTO), and discusses numerous issues and options that confront developing countries in using international cooperation to improve domestic policy and obtain access to export markets.
Europa World Year Book
Provides narrative and statistics on all nations. contains recent history of each country, constitution and law, and statistical surveys, including population of provinces and cities.