Executive Director, World Food Council since 1986. Senior Assistant Deputy Minister, Department of Agr, Canada, 1976-1986. Assistant Deputy Minister Economic Director, General Economic Branch, Department of Agr, Canada, 1972-1976.
Field Staff Member, Rockefeller Foundation, Colombia, 1966-1971. Professor, Associate Proofessor of Agr Economic, University of Guelph, Canada, 1958-1966. Graduate Teaching Assistant, Michigan State University, United States of America, 1957-1958.
Visiting Lecturer, National University of Colombia, 1955-1957.