| 1932 | Born in Israel |
| 1960 | B.Sc. (Agr.), Hebrew University of Jerusalem |
| 1961 | M.Sc. (Agr.), The Hebrew University of Jerusalem |
| 1964 - 1965 | Visiting Assistant Professor,Roosevelt University, Chicago, Illinois |
| 1965 | Ph.D. University of Chicago, Department of Economics |
| 1965 | Lecturer in Agricultural Economics, The Hebrew University of Jerusalem |
| 1968 - 1969 | Chairman, Agricultural Economic Studies, The Hebrew University of Jerusalem |
| 1970 - 1972 | Research Associate and Visiting Scholar, Economic Growth Center, Yale University. |
| 1973 | Senior Lecturer in Agricultural Economics, The Hebrew University of Jerusalem. |
| 1976 | Associate Professor In agricultural Economics, The Hebrew University of Jerusalem. |
| 1978 | Sir Henry d'Avigdor Goldsmid Professor of Agricultural Economics, The Hebrew University of Jerusalem. |
| 1978 - 1979 | Visiting Associate Professor, Department of Agricultural and Applied Economics, University of Minnesota. |
| 1985 - 1994 | Editorial Advisory Board, Agricultural Economics. |
| 1985 - 1986 | Consultant, The World Bank, Washington, D.C. |
|
1974-78,1979-80, 1982-85,1987-88 |
Head, Department of Environmental Economics and Management, The Hebrew University of Jerusalem. |
| 1987 - 1992 | Director of Research, The Center for Agricultural Economic Research, Rehovot, Israel. |
| 1988 | Professor, Agricultural Economics, The Hebrew University of Jerusalem. |
| 1998 | Visiting Professor, Dartmouth College. |
| 2002 | Emeritus. |