6. ETHNIC GROUPS AND LANGUAGES: 85 percent of population is Bulgar. Persons of Turkish, Macedonian, Greek, Romanian, and other origins are guaranteed the right to use their languages and to preserve their cultural heritage, but Bulgarian, the official language, is spoken by the entire population. 7. RELIGION: 90 percent of population adheres to the Eastern Orthodox faith. There are some 750,000 Moslems, 26,000 Protestants, 32,000 Roman Catholics, and 3,000 to 7,000 Jews. Freedom of religion guaranteed, but practice strictly controlled by state. 8. GOVERNMENT: National Assembly is unicameral legislature. Council of Ministers, performing governmental administrative functions, is responsible to State Council, the supreme executive body. Real power vested in communist party's first secretary, Politburo, Secretariat, and Central Committee. 9. ADMINISTRATIVE DIVISIONS: Administration is by people's councils at district (_okrug_) and township or borough (_obshtina_) levels. There are twenty-eight districts, including one composed only of metropolitan Sofia. Districts subdivided into about 1,150 townships and boroughs. 10. INTERNATIONAL ORGANIZATIONS: Member of the Warsaw Treaty Organization (Warsaw Pact); the Council for Mutual Economic Assistance (COMECON); and the United Nations (UN), including several UN specialized agencies. 11. JUSTICE: Three-level court system headed by Supreme Court. Military and special courts responsible directly to Supreme Court. Judiciary administered by Ministry of Justice within Council of Ministers. 12. COMMUNICATIONS: Mass media are state owned and regulated. Little latitude given subject matter produced locally; imports of foreign films and publications are restricted. 13. EDUCATION: Free and compulsory until age fifteen. Priority on scientific, technological, and vocational curricula. Marxism-Leninism stressed in all curricula. 14. ECONOMY: Production, growth, and development programmed in five-year plans, drawn up and monitored by party. The 1971-75 plan, dependent on financial and technical aid from Soviet Union, recognizes need to raise standard of living; improvement is conditional upon rising productivity. 15. LABOR: Work force numbers about 4.4 million. About 27 percent (1.2 million) of the total are in state and collective industries; 25 percent (1.1 million) work full time on agroindustrial complexes. Skilled workers in short supply. 16. AGRICULTURE: Approximately 53 percent of land is agricultural, 69 percent of which is cultivated. All but small mountain farms are organized into 170 agroindustrial complexes. Grains predominate on plains south of Danube River; irrigated Thracian Plain produces more diversified crops. Livestock production inadequate for domestic needs and exports.