00559naa#a2200169#i#450# EN\\bibl\14067 20241123142624.6 2071-7318 20161225b2016####ek#y0engy0150####ca RUS RU ELECTRON MICROSCOPIC STUDY МAGNETITE IRON CONCENTRATE EXPOSED TO HIGH COMPACTION PRESSURE Journal article Belgorod Belgorod State Technological University named after V.G. Shukhov 2016 8 с. Journal article local Matyukhin Pavel bulletinbstu.editorum.ru