The thermal bath in Sliven Mineral Baths (undated). In: Сливенски новини [Slivenski novini], 25 Jul 2002, #28, p. 7 (Nikolay Botushev private archive)
The thermal bath in Sliven Mineral Baths (undated). In: Сливенски новини [Slivenski novini], 25 Jul 2002, #28, p. 7 (Nikolay Botushev private archive)