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
박물학은 생물과 환경을 연구하는 학문입니다.bangmulhak-eun saengmul-gwa hwan-gyeong-eul yeongu-haneun hakmun-imnida.Natural history is the study of organisms and their environment.