Chemistry and uses of molybdenum : proceedings of the Fourth International Conference, Golden, Colorado, USA, August 9-13, 1982 / sponsored by Climax Molybdenum Company, a division of AMAX Inc. and the Department of Continuing Education, Colorado School of Mines ; edited by H.F. Barry, Climax Molybdenum Company, Ann Arbor, Michigan, and P.C.H. Mitchell, Department of Chemistry, University of Reading, England