Petrographical and chemical characteristics of cleaned oltu-stone waste for their potential use (as a semi-precious stone). Mehran University Research Journal of Engineering and Technology, [S. l.], v. 44, n. 3, p. 94–105, 2025. DOI: 10.22581/muet1982.0272. Disponível em: https://murjet.muet.edu.pk/index.php/home/article/view/272. Acesso em: 13 oct. 2026.