Bulgarien, Ministerstvo na Obrazovanieto i Naukata2014-05-212014-05-212002http://curricula-depot.gei.de/handle/11163/1671Učebna programa po 'Okolen svjat' za vtori klasУчебна програма по 'Околен свят' за втори класOther772079307http://www.minedu.government.bg/opencms/export/sites/mon/top_menu/general/educational_programs/2klas/okolen_svjat_2kl.pdfBulgarienSachunterrichtGrundschuleSchuljahr 2LehrplanOnline Publikationl009u080u030u075k01z507