Man’s Role in Changing the Face of the Earth. Chicago: The University of Chicago Press, 1956. xxxviii, 1193 p.: planos, mapas, tablas; 25 cm.

International Symposium on Man’s Role in Changing the Face of the Earth. 1., Princeton, N.J., 1956. ===> Solicitar a/por: Depósito Proatlas 008589