Symposium de Exploracion Geoquimica. 3 volumes. 20th International Geological Congress held in Mexico City in 1956. The articles are in the author's native language.
various

Mexico:: Vol. 1,pp3-234 + plates; Vol. 2,pp235-474 + plates; Vol. 3, pp477-725, 1958.. Very good (Item ID: 7094)

$60.00