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Year of Publication 15.05.1992
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Year of Publication 15.05.1992
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Year of Publication 07.08.1989
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Year of Publication 07.08.1989
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CHECK VALVE
GILMAN LEV M,SU, ULASHCHIK NIKOLAJ K,SU, GUREVICH ALBERT D,SU, KOTYLEVSKIJ VYACHESLAV V,SU, KOTYLEVSKIJ GENNADIJ V,SU, IZMAIL ALFRED A,SU
Year of Publication 05.08.1977
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Year of Publication 05.08.1977
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