by KHARIZANOVA,LIDIJA JJ.,BG, ANGELOV,PLAMEN N.,BG, GUDEV,NIKOLAJJ K.,BG, GUSHEV,KONSTANTIN N.,BG
Year of Publication 15.03.1988

by KHARIZANOVA,LIDIJA JJ.,BG, ZHEKOV,TODOR D.,BG, GUDEV,NIKOLAJJ K.,BG, PETROV,STOJAN M.,BG, CANKOVA,KRASIMIRA P.,BG, NIKIFOROV,VLADIMIR A.,BG
Year of Publication 14.04.1989

by GUDEV,NIKOLAJJ K.,BG, KOVACHEVA,EMILIJA D.,BG, CANKOVA,KRASIMIRA P.,BG, CHERNODRINSKA,MARGARITA S.,BG, VASILEV,VASIL K.,BG, KUZOVA,LJUDMILA L.,BG
Year of Publication 16.05.1988

by KIRILOV,VIKTOR G.,BG, GUDEV,NIKOLAJJ K.,BG, CHIPORIKOV,DIMIT'R S.,BG, V'LCHEV,SPAS I.,BG, MESHULAM,MAIR KH.,BG, TODOROVA,VELICHKA L.,BG
Year of Publication 15.02.1988

by STOJANOVA,GINKA K.,BG, DANOV,NIKODIM D.,BG, GEORGIEV,TODOR G.,BG, GUDEV,NIKOLAJJ K.,BG, VODENICHAROV,PIRIN I.,BG, DIMITRIEV,ANDREJJ S.,BG, CHAK'RJAN,LILJANA S.,BG, NANKOV,NANKO A.,BG, V'LCHEVA,SNEZHANA I.,BG, KOL'OVSKI,VASIL P.,BG, KHRISTAKIEVA,LJUBA I.,BG
Year of Publication 15.02.1989