Historia; Generalidades; Listas de Miembros, Asamblea General; Consejo; Bureau

Mexico, D.F.: International Geological Congress, 1956. First edition (unstated). Octavo in begine printed wrappers; 434p. Ex libris with minimal markings and owner signature; else unread and Fine. . Paperback.

Texts in Spanish //; History of Science; Geology; Institutions