00543naa#a2200181#i#450# EN\\bibl\80564 20250116123943.4 2076-0655 20131225b2013####ek#y0engy0150####ca RUS RU Highly effective grinding aids for portland cement with added mineral additives Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2013 4 с. Journal article local Kotov S V Sivkov S P tsilicates.ru