1. Environmental Accounting for Sustainable Development,1989
2. Soil conservation in developing countries: Project and policy intervention;Anderson,1990
3. Regulating chemicals: A public policy challenge;Archibald;Choices,1990
4. Land registration in Africa: The impact on agricultural production;Atwood;World Development,1990
5. Agriculture as the problem: The case of groundwater contamination;Batie;Choices,1988