1.
Wills' Mineral Processing Technology An Introduction Tot Eh Practical Aspects of Ore Treatme...
by Wills, Barry, Napier-Munn, ...
ISBN: 9780750644501
List Price: $72.95
2.
Wills' Mineral Processing Technology: an Introduction to the Practical Aspects of Ore Treatm...
by Wills, Barry, Napier-munn, Tim
ISBN: 9780080479477