BG45528
KOLENCOV,JANKO A.,BG, DIKARLO,NADJA S.,BG, GEORGIEVA,SVETLA S.,BG, KANALEV,SVETLOZAR K.,BG, GENOV,IVAN K.,BG, V'LEV,DECHO I.,BG, GEORGIEV,GEORGI A.,BG, STOJANOVA,RADKA K.,BG, MANOV,VLADIMIR S.,BG, ATANASOV,LJUBEN P.,BG
Year of Publication 15.06.1989
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Year of Publication 15.06.1989
Patent