Obzorna turisticheska karta, Vitosha /
KIPP po kartografii︠a︡ (Sofia, Bulgaria)
Petrov, Ivan(Ivan Vasilev)
Bulgaria.Glavno upravlenie po geodezii︠a︡, kartografii︠a︡ i kadastŭr.
Sofii︠a︡ : KAB-Glavno upravlenie po geodezii︠a︡, kartografii︠a︡ i kadastŭr,
1978.
Relief shown by contours, shading, and spot heights.
Includes col. ill.
Text, map of Aleko region, and col. ill. on verso.