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
이 관리책은 효과적인 팀 관리를 위한 팁을 제공합니다.i gwanri chaek-eun hyogwa-jeog-in tim gwanli-reul wihan tip-eul jegong-hamnida.This management book provides tips for effective team management.