THE PRINCIPLE OF DEPTH FOR UNDERGROUND LAND DEVELOPMENT: A REVIEW. Jurnal Teknologi, [S. l.], v. 75, n. 10, 2015. DOI: 10.11113/jt.v75.5275. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/5275.. Acesso em: 23 jul. 2024.