by ANDONOVA,ZVETANKA K,BG, BUROV,PETKOV K,BG, IVANOVA,KATJA G,BG, BONTSCHEV,PAVEL P,BG, ATANASSOV,LJUBEN P,BG, ROMANOV,DOBROMIR R,BG, MILEV,CHRISTO S,BG
Year of Publication 28.08.1985