GAULIN, B.; HEDGCOCK, F. T. An inexpensive method for separating quartz and clay. Ancient TL, [S. l.], v. 5, n. 2, p. 2–5, 1981. DOI: 10.26034/la.atl.1981.046. Disponível em: https://www.ancienttl.org/article/view/6308. Acesso em: 1 may. 2025.