00713naa#a2200193#i#450# EN\INFRA-M\bibl\21939 20241015173552.2 1998-0744 20180718b2018####ek#y0engy0150####ca RUS RU The Development of Research Skills with the Problems of Real Mathematics in the Elective Course of Pre-Profile Training of Students Journal article Moscow INFRA-M Academic Publishing LLC. 2018 4 с. Journal article local Образование. Воспитание. Обучение. Организация досуга. 37 RUS Pozdnyakova E. V. Fomina A. V. naukaru.ru