A use-wear interpretation of the most common raw materials from the Olduvai Gorge: Naibor Soit quartzite - Bello Alonso, Patricia; Ríos Garaizar, Joseba; Panera Gallego, Joaquín; Pérez-González, Alfredo; Rubio Jara, Susana; Rojas Mendoza, Raquel; Domínguez-Rodrigo, Manuel; Baquedano, Enrique; Santonja, Manuel (2019)