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Non-ferrous metals : (copper, aluminium, tin, lead and zinc) ; A survey of their production and potential in the developing countries
(1972)
Metal use and the world economy
Roberts, Mark Culmer, (1996)
Genossenschaftlicher Zinnbergbau in Bolivien: internationale Sonderstellung und Perspektiven im Vergleich zum brasilianischen Zinnbergbau
Handrack, Jörg, (1999)
Development finance in the 1990s for Latin American resource exporting countries
Sohn, Ira, (1994)
Chile's resource sectors : challenges and opportunities in the 1990s
Sohn, Ira, (1993)
US energy security : problems and prospects
Sohn, Ira, (1990)