Nuraida, D. and isnani, isnani (2021) “VALIDITAS MODUL BIOLOGI KELAS VII BERBASIS PROBLEM SOLVING PADA MATERI PENCEMARAN LINGKUNGAN”, Prosiding SNasPPM, 5(2), pp. 251–256. Available at: http://prosiding.unirow.ac.id/index.php/SNasPPM/article/view/416 (Accessed: 2 May 2024).