The Birds of the Sakar Mountain/ Stoycho Stoychev, Dimitar Demerdzhiev, Georgi Gerdzhikov, Borislav Borisov ; editor Petar Shurulinkov; translation Yurii Kornilev ; maps Hristo Hristov - 56 pages: col photography, maps; 29 cm. ISBN: 9789549232219 Subjects--Topical Terms: Birds -- BulgariaBird refuges -- Bulgaria -- GuidebooksBirds -- Bulgaria -- Geographical distributionBirds -- Bulgaria -- IdentificationKey Biodiversity Areas -- BulgariaBiogeography -- Bulgaria Dewey Class. No.: ÖDA 598.09499 / BI