Febrian A, Achmad Salehudin, Fairuz Zakirah, Jumadi Jumadi. Feasibility of Biophysics Flipbook on Respiration System Content for Junior High School Student. jpppf [Internet]. 2023 Mar. 15 [cited 2026 May 19];9(1):1-10. Available from: https://journal.unj.ac.id/unj/index.php/jpppf/article/view/27498