Keti Iovcheva and Nina Musurlieva
Pages: 1-9
Elena Ilieva
Pages: 17-29
Gergana A. Avramova - Todorova
Pages: 86-93
Manasa Godati and Rojina Rani. M
Pages: 10-16
Miroslav Angelov
Pages: 30-49
NATURAL AND TECHNICAL SCIENCES SECTION
Judit Z. Tövissy and Emiliyan G. Petkov
Pages: 50-57
Aleksandrina Bankova
Pages: 69-75
Aleksandrina Bankova, Tatjna Dimitrova and Ginka Gecheva
Pages: 58-68
Tatiana Mechkarova and Aleksandrina Bankova
Pages: 76-85