Bulgaria.1965. Dimitrov, C.  Exkursionsfuhrer B - Sofia – Plovdiv – Burgas – Varna – Tarnovo – Kasanlak – Sofia. Set of nine colour printed folded geological maps at 1:200,000 scale with guidebook for field trip following Carpathian-Balkans Geological Association 7^th Congress 1-6 September 1965. Strip maps with 10-20km wide corridor along route; text in German and Bulgarian. Covers from capital Sofia to SE to Black Sea coast at Burgas then northward to Varna then inland back to Sofia. Maps clean bright and in very good condition. Guide book in German 91pp. Signature of DV Ager on cover Age toned otherwise in very good condition.