From 1987 to 1988 he was a Lecturer and then Senior Lecturer in the Department of Agricultural Economics of the University of Sydney .
From 1984 to 1985 he was a Research Fellow of the Centre for Resource and Environmental Studies at the Australian National University .
From 1987 to 1988 Research Fellow was a Research Fellow and then Senior Lecturer in the Department of Agricultural Economics of the University of Sydney .
From 1984 to 1985 he was a Research Fellow of the Centre for Resource and Environmental Studies at the Australian National University .