Agriculture
- e1 PRODUCTS AND TECHNOLOGY
- e2 NATURAL ENVIRONMENT AND HUMAN-MADE CHANGES TO ENVIRONMENT
- e110 Products or substances for personal consumption
- e160 Products and technology of land development
- e210 Physical geography
- e220 Flora and fauna
- e1100 Food
- e1600 Products and technology of rural land development
- e2100 Land forms
- e2200 Plants