Washington, U.S. Dept of the Interior and U.S. Geological Survey, 1999. The Mineral Industry of Sudan by Philip M. Mobbs, p LL1. Book call no. Boulder, CO, Westview Press, 1999. The author was the American Ambassador to Sudan in 1992-1995.
Book call no.
Binghamton, NY, CSA Publications, 1999. Gives details about the government of each country. Book call no. New York, St. Martin's Press, 1999. For each country gives information such as history, territory and population, social statistics, constitution and government, recent elections, current administration, defense, international relations, economy, energy and natural resources, trade, communications, social institutions, culture, and diplomatic representatives.