Bulgarien, Ministerstvo na Obrazovanieto i Naukata2014-05-212014-05-212003http://curricula-depot.gei.de/handle/11163/1649Učebna programa po Čovekăt i obščestvoto: 4. klasУчебна програма по Човекът и обществото: 4. класOther772208727http://www.minedu.government.bg/opencms/export/sites/mon/top_menu/general/educational_programs/4klas/obshtestvo_4kl.pdfBulgarienSachunterrichtGrundschuleSchuljahr 4LehrplanOnline Publikationl009u080u075k01z507