[백성호의 현문우답] The Harvard student calendar is ten days early… ‘Study Secret’ seen by Professor Jae-Chun Choi
![[백성호의 현문우답] The Harvard student calendar is ten days early… ‘Study Secret’ seen by Professor Jae-Chun Choi](https://pds.joins.com/news/FbMetaImage/202103/f8e21240-abd9-42fb-9286-443e107fb983.jpg "[백성호의 현문우답] The Harvard student calendar is ten days early… ‘Study Secret’ seen by Professor Jae-Chun Choi")
