by KRALEV IVAN G.,BG, GEORGIEV GEORGI S.,BG
Year of Publication 13.12.1989

by GEORGIEV,GEORGI S.,BG, KRALEV,IVAN G.,BG
Year of Publication 28.06.1988

by GEORGIEV,GEORGI S.,BG, KRALEV,IVAN G.,BG
Year of Publication 28.04.1985

by KOSTOVA,IVANKA G.,BG, GEORGIEV,GEORGI S.,BG, TASHEV,IVAN S.,BG, GOLEMSHINSKI,GEORGI N.,BG
Year of Publication 16.01.1989

by DATSCHEV,LJUBOMIR B.,BG, GEORGIEV,GEORGI S.,BG, HOROSOV,ASSEN S.,BG, VASSILEV,VASSIL D.,BG, KRALEV,IVAN G.,BG
Year of Publication 29.05.1989

by VASILEV,VASIL D.,BG, CHOROSOV,ASEN S.,BG, GEORGIEV,GEORGI S.,BG, DACEV,LJUBOMIR B.,BG, KRALEV,IVAN G.,BG
Year of Publication 16.08.1988

by DATSCHEV,LJUBOMIR B.,BG, GEORGIEV,GEORGI S.,BG, HOROSOV,ASSEN S.,BG, VASSILEV,VASSIL D.,BG, KRALEV,IVAN G.,BG
Year of Publication 28.04.1985

by GEORGIEV,GEORGI S.,BG, KRALEV,IVAN G.,BG
Year of Publication 13.04.1988

by DATSCHEV,LJUBOMIR B.,BG, GEORGIEV,GEORGI S.,BG, HOROSOV,ASSEN S.,BG, VASSILEV,VASSIL D.,BG, KRALEV,IVAN G.,BG
Year of Publication 13.04.1988