Mining and minerals
Davies, E. N
Mining and minerals by E. N. Davies and G. A. Northedge - Oxford Pergamon Press 1967 - xi, 123 p. : ill., maps ; 24 cm.
008202376X
67-026685
Mineral industries
Mining and minerals by E. N. Davies and G. A. Northedge - Oxford Pergamon Press 1967 - xi, 123 p. : ill., maps ; 24 cm.
008202376X
67-026685
Mineral industries
