APPARATUS FOR DELIVERY OF COMPOSITIONS DURING SUPPORTING OF MINE WORKINGS von FRENKEL DAVID YA,SU, AVIZHA FRANTS S,SU, PETRUSEVICH NIKOLAJ M,SU, SHISHKOV PAVEL A,SU, KLUSSON OLEG E,SU, SEREGIN ALEKSEJ G,SU, NISNEVICH VALERIJ S,SU

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