1. 19/3/1988 Mountain agriculture Land degradation in Papua New Guinea Sloping agricultural land technology Land use systems in marginal highlands Community forestry Cassava planting Pest management
  2. 1/1/1991 In addition to providing an historical perspective of the development of new kinds of forestry activities, this review contributes a forward-looking assessment of constraints and opportunities for strengthening participation in all forestry activities.
  3. This book collect articles from around the world that discuss forest, farm, and community tree research.