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
조작주의는 과학적 개념을 측정 가능한 방식으로 정의하려고 합니다.jojakjuineun gwahagjeok gaenyeomeul cheugjeong ganeunghan bangsik-euro jeong-uiharyeogo hamnida.Operationalism attempts to define scientific concepts in measurable ways.