The clay minerals of the Supai Group--Grand Canyon [abs.] in International Clay Conference, 7th, Bologna-Pavia, Italy, September, 1981

Hauff, P.L., and McKee, E.D., 1981, The clay minerals of the Supai Group--Grand Canyon [abs.] in International Clay Conference, 7th, Bologna-Pavia, Italy, September, 1981: Association Internationale Por l'Etude des Argiles (AIPEA) [Association International for the Study of Clays].