FIRE BARRIER VALVE von ZATEVAKHIN VLADIMIR L,SU, SAFRONOV VLADIMIR YA,SU, KRASILNIKOV YURIJ V,SU, KANASHIN VLADIMIR P,SU, RIVKIN PAVEL R,SU, BATTALOV ALBERT Z,SU

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BREATHER VALVE von ZATEVAKHIN VLADIMIR L,SU, SAFRONOV VLADIMIR YA,SU, KRASILNIKOV YURIJ V,SU, KANASHIN VLADIMIR P,SU, RIVKIN PAVEL R,SU, BATTALOV ALBERT Z,SU, EFREMOV VASILIJ P,SU, TIMOFEEV SERGEJ G,SU

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