DEVICE FOR DIRECTING OF HAULING CHAIN OF THE CONVEYOR von LITVINOV HEORHII OLEKSIOVYCH, MASAL''SKYI YURII VOLODYMYROVYCH, KOSARIEV IVAN VASYLIOVYCH, KOSARIEV VASYL VASYLIOVYCH, LAPTIEV ANATOLII GRYGOROVYCH, SIKHATSKYI VOLODYMYR OLEKSIOVYCH, ANDREEV HEORHII VOLODYMYROVYCH

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