by MAKHOVA,LILJANA D, MIKHAJJLOV,DIMO G, MARINOVA,ELENA S, KIRCHEVA,RADKA S, MARKOVA,TANJA N, GRIGOROV,GRIGOR R, DENEVA,TEMENUZHKA D, PETKOV,LAZAR I, MARAZOVA,ISKRA R
Year of Publication 15.04.1987

by MAKHOVA,LILJANA D, MIKHAJJLOV,DIMO G, KIRCHEVA,RADKA S, MARKOVA,TANJA N, GRIGOROV,GRIGOR R, DENEVA,TEMENUZHKA D, GROZEVA,ELENA I, PETKOV,LAZAR I, MARAZOVA,ISKRA R, STOJANOVA,JANKA G
Year of Publication 15.04.1987