Author: DEVIGNE, J-P; HIRTZ, P.
Title: Notice Explicative Sur La Feuille Mayoumba-Ouest. Carte Geologique de Reconnaissance a 'echelle de 1/500,000. Leves effectues de 1946 a 1949.
Description: First Edition; 8vo; pp. 68; 1 loose folding colour map in pocket at rear, bibliography; original stiff stapled wrapper, wrapper browned, a good copy. Paris, Republiques de l'Afrique Equatoriale Francaise, 1958. Text in French.

Keywords: geology mining Africa mines mining French foreign language Congo