ZUYINA, Alsa Vika; WIDODO, Wahono. VALIDITY OF ETHNOSCIENCE BOOKLET MEDIA IN THE REGION OF PONOROGO ON SOUND WAVE SUB MATERIAL. PENSA: E-JURNAL PENDIDIKAN SAINS, [S. l.], v. 8, n. 2, p. 178–182, 2020. Disponível em: https://ejournal.unesa.ac.id/index.php/pensa/article/view/38360. Acesso em: 3 jul. 2025.