WORKING WHEEL OF CENTRIFUGAL PUMP FOR HYDROMIXTURES
STOJANOV,KREMEN D.,BG, IVANOV,STANISLAV A.,BG, GROZEV,GROZ'O I.,BG, LAZAROV,MILADIN A.,BG, PAVLOV,GEORGI G.,BG
Year of Publication 15.09.1988
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Year of Publication 15.09.1988
Patent