@mastersthesis {, title = {Technologies prehispaniques de l{\textquoteright}obsidienne: Les centres de production de la r{\'e}gion de Zin{\'a}paro-Prieto}, volume = {Unpublishe}, year = {1991}, school = {Universit{\'e} de Paris I}, address = {Paris}, author = {Darras, V{\'e}ronique} }