00811naa#a2200229#i#450# EN\\bibl\27323 20241212123511.4 2308-4057 20180620b2018####ek#y0engy0150####ca ENG RU STUDY OF THE PROCESS OF CONCENTRATION AS A FACTOR OF PRODUCT QUALITY FORMATION Journal article Kemerovo Kemerovo State University 2018 9 с. Journal article local Химическая технология. Химическая промышленность. Родственные отрасли. 66 ENG Maytakov A. I. Yusupov S. T. Popov Anatoliy M. Kravchenko Sergey Nikolaevich Bakin Igor Alekseevich vestnik-bees.kemsu.ru