ni akoole ninu ISO 3166-2, apa opagun ISO 3166 ti International Organization for Standardization (ISO) tejadesiwe to setumo awon amioro fun oruko awon ipinsabe koko orile-ede Bulgaria.ItokasiISO 3166.. 
Ni akọọlẹ ninu isọ 3166-2, apa ọ̀págun isọ 3166 ti International Organization for Standardization (iṣọ) tẹjadesí to ṣètumọ̀ awọn ami fun orukọ awọn ipin koko koko awọn orilẹ-itọkasi.isọ 3166.. 