REACTION APPARATUS FOR OXIDATION OF SULPHUR DIOXIDE von GERILOVSKI DMITRIJ DMITRIEV,BG, BUNIMOVICH GRIGORIJ A,SU, SAPUNDZHIEV KHRISTO GEORGIEV,BG, ELENKOV DMITRIJ GEORGIEV,BG, GROZEV GEORGI GROZDANOV,BG, GEORGIEV GEORGI TENEV,BG, MATROS YURIJ SH,SU, GOLDMAN OLEG V,SU, BALASHOV ALEKSANDR A,SU, KOZLOV VLADIMIR P,SU, VRBENOV SVETOZAR SAVCHEV,BG, LAKHMOSTOV VIKTOR S,SU

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METHOD FOR RECOVERING ARSENIC FROM SULPHURIC ACID WASHING SOLUTIONS von BAK'RDZHIEV,PET'R N.,BG, ARSOV,ALEKSAND'R G.,BG, KOSTOV,GEORGI JJ.,BG, PETKOV,BORIS A.,BG, V'RBENOV,SVETOZAR S.,BG, GRUEV,IVAN N.,BG, GEORGIEV,DIMIT'R S.,BG, GENEVSKI,VLADIMIR V.,BG, PETROV,DIMIT'R A.,BG, KOTOV,TODOR I.,BG, SIMEONOV,KHRISTO V.,BG, POPOV,KHRISTO P.,BG, STOJJNOV,DIMIT'R I.,BG, TENEV,VENELIN B.,BG, ILIEV,KIRIL S.,BG, GERILOVSKI,DIMIT'R D.,BG, GENCHEV,DINKO G.,BG, LESIDRENSKI,PENCHO D.,BG

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