URN:NBN:SI:doc-WBPF6G0G2012Arkumarev, VolenDobrev, DobromirDobrev, VladimirSpasov, Svetoslav D.documents/doc/W/URN_NBN_SI_doc-WBPF6G0G_001.pdfdocuments/doc/W/URN_NBN_SI_doc-WBPF6G0G_001.txt154/15533articlestr. 181-1890351-2851284065280URN:NBN:SI:doc-WBPF6G0GengDruštvo za opazovanje in proučevanje ptic SlovenijeAcrocephalusBY-NC-NDBolgarijamonitoringptice ropariceAn overview of monitoring for raptors in BulgariaPregled monitoringa populacij ptic roparic v Bolgariji