by TODOROV,IVAN M, PIPEVA,PETRANKA T
Year of Publication 14.03.1987

by PIPEVA, PETRANKA T, TODOROV, IVAN M, NEDJALKOV, NEDJALKO M
Year of Publication 15.02.1991

by ILIEV, SOTIR T, PIPEVA, PETRANKA T, GALABOV, PETAR K
Year of Publication 15.01.1991

by TODOROV,IVAN M, PIPEVA,PETRANKA T, ILIEV,SOTIR T
Year of Publication 15.06.1987

by ILIEV, SOTIR T, PIPEVA, PETRANKA T, TODOROV, IVAN M, NEDJALKOV, NEDJALKO M
Year of Publication 14.06.1991

by ILIEV, SOTIR T, PIPEVA, PETRANKA T, GALABOV, PETAR K, KOSHNICHAROV, KOSTADIN V
Year of Publication 15.01.1991

by ILIEV, SOTIR T, PIPEVA, PETRANKA T, GARVANSKA, RADKA I, DOBREVA, RAJNA E, ALEKSIEV, ANGEL K
Year of Publication 15.08.1989

by TODOROV,IVAN M, KARAIVANOVA,MARGARITA S, PIPEVA,PETRANKA T, ILIEV,SOTIR T
Year of Publication 14.11.1987

by TODOROV,IVAN M, KIROV,BELCHO S, PIPEVA,PETRANKA T, TENEKEDZHIEV,PENCHO D, ILIEV,SOTIR T
Year of Publication 15.06.1987

by TODOROV,IVAN M, PIPEVA,PETRANKA T, MOMOV,IVAN K, ILIEV,SOTIR T, DERMENDZHIEV,MARIJJ P
Year of Publication 15.09.1986

by TOKAREVA, KRASIMIRA N, STOJANOV, STOJAN P, VALCHEV, VLADIMIR I, ILIEV, SOTIR T, PIPEVA, PETRANKA T, PETKOVA, EVDA KH
Year of Publication 15.10.1990

by ILIEV, SOTIR T, PIPEVA, PETRANKA T, TODOROV, IVAN M, EKSNER, RUDOLF, ADAMEK, MILAN, NIKOLAEV, PENCHO D, TOTEV, ILIJA P, KHRISTOVA, PENKA KH
Year of Publication 15.10.1992

by SENGALEVICH,GEORGI M, TODOROV,IVAN M, PIPEVA,PETRANKA T, VERANI,KHARALAMBI JA, ILIEV,SOTIR T
Year of Publication 15.03.1985

by TOKAREVA, KRASIMIRA N, VALCHEV, VLADIMIR I, STOJANOV, STOJAN P, ILIEV, SOTIR T, PIPEVA, PETRANKA T, PETKOVA, EVDA KH, IGNATOVA, JORDANKA S
Year of Publication 15.10.1990

by TENEKEDZHIEV,PENCHO D.,BG, TODOROV,IVAN M.,BG, ILIEV,SOTIR T.,BG, PIPEVA,PETRANKA T.,BG, KIROV,BELCHO S.,BG
Year of Publication 15.07.1988

by PIPEVA, PETRANKA T, VALCHEVA, LILJANA L, DIMITROVA, DONKA KH
Year of Publication 30.06.1997

by ZAKHARIEVA,TODORKA P.,BG, DIMITROVA,KALJA M.,BG, DOJJCHEVA,MARIJA K.,BG, TODOROV,IVAN M.,BG, GARVANSKA,RADKA I.,BG, DRAGANOVA,KAMELIJA A.,BG, ILIEV,SOTIR T.,BG, PIPEVA,PETRANKA T.,BG, LJUBCHEV,LJUBCHO A.,BG
Year of Publication 15.06.1989

by TODOROV,IVAN M, VASILEVA,PETRANKA D, TAUSHANSKI,SVETOSLAV L, PIPEVA,PETRANKA T, VERANI, KHARALAMBI JA, MIKHAJJLOV,MIKHAIL A, ATANASOVA,STEFKA M, SEMERDZHIEVA,EVGENIJA M
Year of Publication 15.09.1981