For citations:
Guzik E.O. Scientific substantiation of the ordinal scale of difficulty of subjects for students 5–9 grades. Medical Journal. 2022;(3):148-154. (In Russ.) https://doi.org/10.51922/1818-426X.2022.3.148
Guzik E.O. Scientific substantiation of the ordinal scale of difficulty of subjects for students 5–9 grades. Medical Journal. 2022;(3):148-154. (In Russ.) https://doi.org/10.51922/1818-426X.2022.3.148