De Kun, N. 1923-
Mineral economics of Africa / N. de Kun. - Amsterdam : Elsevier, 1987. - 345 p. : ill. - Developments in economic geology ; 22 .
0444427953
90045126
Mines and mineral resources--Africa.
Mineral industries--Africa.
Natural resources--Africa.
Mineral economics of Africa / N. de Kun. - Amsterdam : Elsevier, 1987. - 345 p. : ill. - Developments in economic geology ; 22 .
0444427953
90045126
Mines and mineral resources--Africa.
Mineral industries--Africa.
Natural resources--Africa.