00925nas 2200337 a 450 99620758800331620180309000137.01333-9575(OCoLC)426142918(CKB)1000000000526535(CONSER) 2009215421(DE-599)ZDB2215195-3(EXLCZ)99100000000052653520090717auuuu9999 uy bulNovostiSofii͡a Akademichno izd-vo "Prof. Marin Drinov"1331-808X SciencePeriodicalsScienceBulgariaPeriodicalsHumanitiesPeriodicalsHumanitiesBulgariaPeriodicalsScienceScienceHumanitiesHumanitiesBŭlgarska akademii͡a na naukite.JOURNAL996207588003316Novosti1321924UNISA