Yanka Prodanova, Todor Kundurzhiev, Milena Yancheva-Stoycheva, Nevena Tzacheva and Karolina Lyubomirova
Pages: 1-13
Yana Vasileva
Pages: 24-31
Tsvetomira Trifonova
Pages: 14-23
Milena T. Todorova
Pages: 32-50
Velina Koleva – Sachkova
Pages: 51-62
NATURAL AND TECHNICAL SCIENCES SECTION
Mariya Armyanova
Pages: 63-78
Tanya Avramova, Evstati Lefterov
Pages: 86-94
Tanya Avramova
Pages: 79-85