by GENOVA,PENKA JJ, GEORGIEV,LJUBEN G, IVANOV,IVAN S
Year of Publication 16.02.1987

by TONCHEV,DIMCHO M, EFREMOV,IVO G, GENOVA,PENKA JJ, LOK,MAJJ S
Year of Publication 15.12.1986

by PATOV,DOBRI C, PAVLOV,VESELIN I, GENOVA,PENKA JJ, ANDONOV,ASPARUKH L
Year of Publication 15.08.1986

by GENOVA,PENKA JJ, ZAKHARIEV,EVTIM V, KONSTANTINOV,MIKHAIL S
Year of Publication 15.07.1986

by GENOVA,PENKA JJ.,BG, MILKOV,OGNJAN M.,BG, BARAKOV,IVAN P.,BG
Year of Publication 15.02.1989

by PATOV,DOBRI C, PAVLOV,VESELIN I, GENOVA,PENKA JJ, ANDONOV,ASPARUKH L, KONSTANTINOV,MIKHAIL S
Year of Publication 15.04.1987

by PATOV,DOBRI C, PAVLOV,VESELIN I, GENOVA,PENKA JJ, KARARIZOV,IVAN T, KONSTANTINOV,MIKHAIL S
Year of Publication 15.05.1986

by PAVLOV,VESELIN I, GENOVA,PENKA JJ, ANDONOV,ASPARUKH L, KARARIZOV,IVAN T, KONSTANTINOV,MIKHAIL S, KARARIZOV,DIMITR T
Year of Publication 15.05.1986

by PAVLOV,VESELIN I.,BG, G'L'BOVA,SEVDALINA D.,BG, KARARIZOV,IVAN T.,BG, KONSTANTINOV,MIKHAIL S.,BG, G'L'BOV,VITAN B.,BG, GENOVA,PENKA JJ.,BG, ANDONOV,ASPARUKH L.,BG, KARARIZOV,DIMIT'R T.,BG
Year of Publication 15.06.1989

by ZAKHARIEV, EVTIM V, GENOVA,PENKA JJ, KONSTANTINOV,MIKHAIL S
Year of Publication 15.12.1981

by ZAKHARIEV, EVTIM V, GENOVA,PENKA JJ, KONSTANTINOV,MIKHAIL S
Year of Publication 15.12.1981

by PAVLOVA,JJONKA T, GLBOV,VITAN B, GUNEVA,MARIJANA P, PAVLOV,VESELIN I, GENOVA,PENKA JJ, ANDONOV,ASPARUKH L, KONSTANTINOV,MIKHAIL S, GLBOVA,SEVDALINA D
Year of Publication 15.08.1983

by SOTIROV,IVAN S, ALKALAJJ,JURIJJ E, GLBOV,VITAN V, PAVLOV,VESELIN I, ANDONOV,ASPARUKH L, GENOVA,PENKA JJ, DUSHKOV,SPAS S, RAJJCHINOV,PAVEL M, GERGINOV,BRANIMIR B, PAKOV,DOBRI C, KONSTANTINOV,MIKHAIL S
Year of Publication 15.09.1981