B. A. Wills 1985. Mineral Processing Technology. An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery, 3rd ed. First published in 1979. xv + 629 pp. Oxford, New York, Toronto, Sydney, Paris, Frankfurt: Pergamon Press. Price £31.50, U.S. $60.00 (hard covers), £9.75, U.S. $20.00 (paperback). ISBN 0 08 031160 1 (hard covers), 0 08 131159 8 (paperback).