00469naa#a2200157#i#450# EN\\bibl\85323 20241129075251.5 2500-3372 20240808b2024####ek#y0engy0150####ca RU Mental Concept of Professional Identification in Youth: Part I Journal article Kemerovo Kemerovo State University 2024 9 с. Journal article local P'yankova Lyudmila Alekseevna jsocnet.ru