Policy and Planning Forest policy 8 Agricultural Economics 7 Forestry Economics, (New March 2000) 7 Forests 7 Silviculture and Forest Management 7 Forests and Forest Trees (Biology and Ecology) 6 Agricultural policy 5 Forest management 5 Forests and forestry 5 Natural Resource Economics, (New March 2000) 5 Social Psychology and Social Anthropology, (New March 2000) 5 Sustainability 5 Laws and Regulations 4 Meteorology and Climate 4 Biological Resources (Plant) 3 Biotechnology 3 Biotechnology (General), (Revised June 2002) 3 Forest resources 3 Land Resources 3 Mathematics and Statistics 3 Public health 3 Research 3 Social participation 3 Techniques and Methodology 3 Agencies and Organizations 2 Agriculture 2 Agroforestry 2 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 2 Atmosphere 2