Variations in human ecodynamics in the southern Pyrenees: chert procurement and use at Cova Gran de Santa Linya during the Upper Paleolithic - Sánchez-Martínez, Javier; Rafart-Vidal, Eulàlia; Benito-Calvo, Alfonso; Martínez-Moreno, Jorge; Sánchez de la Torre, Marta (2026)