Bulgaria  search
BTEurope
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 ..Bulgaria
NTBalkan Foreland
 Beli Izvor Bulgaria
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 Bulgarian Rhodope Mountains
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RTBalkan Peninsula
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Bulgarian Dobruja  search
BTEurope
 .Southern Europe
 ..Bulgaria
 ...Bulgarian Dobruja
BTEurope
 .Southern Europe
 ..Dobruja Basin
 ...Bulgarian Dobruja
SNThis term has multiple hierarchies. Added to Thesaurus in 1981.
Bulgarian Rhodope Mountains  search
BTEurope
 .Southern Europe
 ..Bulgaria
 ...Bulgarian Rhodope Mountains
BTEurope
 .Southern Europe
 ..Rhodope Mountains
 ...Bulgarian Rhodope Mountains
RTMadan Bulgaria
 Rila Mountains
SNThis term has multiple hierarchies. Added to Thesaurus in 1981.