00613naa#a2200205#i#450# EN\\bibl\80693 20241123141259.6 2076-0655 20150925b2015####ek#y0engy0150####ca RUS RU Modification of cement binder by the dispersed additive of secondary polyamide Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2015 3 с. Journal article local Musafirova G Ya Grushevskaya E N Musafirov E V Popova M N tsilicates.ru