2025-10-272025-10-27https://openaccess.ircica.org/handle/123456789/3923Scale 1:210,000H-3 (Copy 1); H-4 (Copy 2); H-1452 (Copy 3); H1517 (Copy 4)Print 1 col. mapBurgas-BulgariaKırklareli-TurkeySliven-BulgariaEdirne-TurkeySvilengrad-Haskovo- BulgariaMap33