Demographic yearbook 1979: Spesial issue (historical suplemen) = annuaire demographique Demographic yearbook 1979 = annuaire demographique Demographic yearbook 1978 = annuaire demographique Yearbook of contruction statistics 1972-1979 Statistical Yearbook For Latin America: 1979 Edition = Anuario estadistico de America Latina y el Caribe Yearbook of contruction statistics 1968-1977Yearbook on human rights for 1979Yearbook of International Trade Statistics 1979: Vol. 1 Trade by country = Annuaire Statistique du Commerce International: Commerce par paysYearbook of International Trade Statistics 1978: Vol. 1 Trade by country = Annuaire Statistique du Commerce International: Commerce par paysYearbook of the International Law Commission 1978 volume I