NUGROHO, R. G. R. C.; HIDAYAH, E. N. RENCANA PERTAMBANGAN TANAH LIAT DI KABUPATEN TRENGGALEK . Envirous, [S. l.], v. 4, n. 2, p. 32–38, 2024. Disponível em: https://envirous.upnjatim.ac.id/index.php/envirous/article/view/180. Acesso em: 19 may. 2024.