Bulgaria : a bibliographic guide /
by Marin V. Pundeff.
- Washington : Slavic and Central European Division, Reference Department, Library of Congress : [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.], Slavic and Central European Division, Reference Department, Library of Congress : [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.], 1965.