Metallurgical processes for the year 2000 and beyond : proceedings of the International Symposium on Metallurgical Processes for the Year 2000 and Beyond, held at the TMS 1989 Annual Meeting, Las Vegas, Nevada, February 27-March 3, 1989 / and sponsored by the TMS Physical Chemistry Committee and the Pyrometallurgy Committee. The symposium was co-sponsored by the following: Deutsche Gesellschaft fur Meallkunde Ev [and others] ; edited by H.Y. Sohn and E.S. Geskin