Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
미숙성론은 개인의 발달 과정에서 중요한 개념이다.misuksungnon-eun gaein-ui baldal gwajeong-eseo jungyohan gaenyeom-ida.The immaturity theory is an important concept in the process of individual development.