@article {1568, title = {CONTENTS}, journal = {Problems of Education in the 21st Century}, volume = {80}, year = {2022}, month = {August/2022}, pages = {Continuous}, type = {Other}, chapter = {493}, abstract = {Contents, Vol. 80, No. 4, 2022, PEC}, keywords = {contents}, issn = {1822-7864}, url = {https://oaji.net/articles/2022/457-1662400575.pdf}, author = {Editorial Board} }