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Application filed by Andrzej Badaj, Jan Materzok, Maciej Mazurkiewicz, Antoni TajduśfiledCriticalAndrzej Badaj
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Sposób scalania i uszczelniania spękanych mas skalnych wokół wyrobisk górniczych w kopalniach węgla kamiennego oraz innych kopalniach głębinowych wydobywających kopaliny użyteczne
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