Before revision: References Further reading Ahl, V. & Allen, T. F. H. (1996) Hierarchy Theory: A Vision, Vocabulary, and Epistemology.
After revision: See alsoAgriculture | Agroecology | agroecosystem | Agronomy | Applied ecology | Ecology | Ecology of contexts | Environmental Economics | Holon (philosophy) | Political Science | Sociology | Soil Science | Sustainable Agriculture | Rural Sociology |References Further reading Ahl, V. & Allen, T. F. H. (1996) Hierarchy Theory: A Vision, Vocabulary, and Epistemology.