Translations:Basic Field Epi: Course Resource Book/359/en
| Unit of study | Some relevant characteristics to compare |
| Animal, cage, mob, paddock | species, sex, age, breed, weight, size, soil type, stocking density, stage of production, available feed, water source |
| Farm | location, size, source of stock, source of feed and water, production method, other business |
| Village | location, number of farms, farm types, geography, climate |
| District | location, size, government services, geography, climate |