A 866
CD 36
CD 36
CD 36
Мф 21
Б 225
A 1684
A 2317 b
A 2771
A 1810
A 417a
A 540
A 1208
A 3325c
Каталог "Периодика" | Списание
Scientific Works of the Union of Scientists in Bulgaria - Plovdiv. Series B. Natural Sciences and the Humanities
A 2253
A 682
A 3094
A 3018
A 3120