[Topografska karta na Bŭlgarii︠a︡ na mi︠e︡rka 1:50 000] /
Dŭrzhaven geografski institut (Bulgaria)
[Sofia?] : Dŭrzhaven geografski institut,
1936-1941.
Relief shown by contours and spot heights; relief also shown by hachures on some sheets.
Some sheets cover areas (western Thrace) formerly in Bulgaria but now in Greece.
Common title devised by cataloger.
Sheets subtitled and numbered in upper margin, e.g.: List 283 i 284. Sozopol, Burgasko -- List 297. Borisovgrad -- List 375. Drama -- List 380. Gi︠u︡mi︠u︡ldzhina.
Years in statement of attribution range from 1934 to 1939.
Military grid.
Publication dates range from "Izdaden--1936" to "Dŭrzhaven geografski institut--1941."
Some sheets have enlargement statement in lower margin at left: Fotomekhanichno uvelichenie ot karta 1:100 000.
Photostat copies of WWII captured German-held maps.
Original sheets variously annotated and rubber-stamped.
Some sheets include notes and diagrams in margin.
Graphic index with maps (Holdings cover mainly southern Bulgaria and northern Greece.