Panorama de l'industrie minière Maroc. Direction des mines Published: 1988 Total Pages: 1095 Get eBook
Atelier sur les ressources minérales et le développement durable Published: 1994 Total Pages: 350 Get eBook
Roskill's Directory of Sources for Metals and Minerals Data Roskill Information Services Published: 1980 Total Pages: 152 Get eBook