Pengembangan Media E-Book Strumi Berbasis Qr Materi Struktur Bumi Kelas V SDN Togogan 1 Kabupaten Blitar. JPJSRE [Internet]. 2026 Jun. 7 [cited 2026 Oct. 30];6(2):25-4. Available from: https://ejurnal.unima.ac.id/index.php/paradigma/article/view/13187