Identification of local and allochthonous flint artefacts from the Middle Palaeolithical site ?Abrigo de la Quebrada? (Chelva, Valencia, Spain) by macroscopic and physicochemical methods - Roldán, Clodoaldo; Carballo, Jorgelina; Murcia, Sonia; Eixea, Aleix; Villaverde, Valentín; Zilhão, João (2015)