RAIL- WAY EQUIPMENT FOR DISCHARGE OF RAIL UNITS
CHERNEV,NIKOLAJJ P.,BG, CEKOV,GRIGOR I.,BG, PETROV,VLADIMIR M.,BG, KHOVANESJAN,VICHEN T.,BG, GAJJDAROV,NIKOLA M.,BG, KARADZHOV,TODOR D.,BG
Year of Publication 15.04.1988
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Year of Publication 15.04.1988
Patent