SELF-PROPELLED UNIT FOR DRILLING HOLES AND BLAST HOLES von KOPYTOV ALEKSANDR ,SU, STRIKH YURIJ G,SU, KOZYDUB VLADIMIR ,SU, SHAPOSHNIKOV VIKTOR D,SU, SUKHOMESOV MIKHAIL N,SU, GULYAKOV ILYA ,SU, RUSINOV VLADIMIR ,SU

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