@book{99,
  keywords = {ecology, rice, swiddens, taxonomy, sorghum, Zande, rock formations, millet, maize, green gram, overcultivation, crop rotation, slash and burn, cowpeas},
  author = {Pierre de Schlippe},
  title = {Shifting cultivation in Africa: The Zande system of agriculture},
  abstract = {The excerpts from this book talk about the Zande ecological conceptions concerning swidden farming, rock and stone formations. The second part of this excerpt looks at Zande Crops: millet, Maize, sorghum, rice, cowpeas, green gram. The excerpt finishes with a discussion of overcultivation.},
  year = {1956},
  pages = {xxxi, 304 pp.},
  month = {01/1956},
  publisher = {Routledge & Kegan Paul},
  address = {London, England},
  url = {https://ehrafworldcultures-beta.its.yale.edu/cultures/fo07/documents/060},
  language = {English},
}