 | Agricultural Expansion and Pioneer Settlements in the Humid Tropics (UNU, 1988, 305 pages) |
 |  | 1. Introduction |
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References
FAO. 1980. The state of food and agriculture, 1979. Rome.
-. 1983.
Yearbook of food and agriculture statistics. Rome.
Thunen, J. H. von. 1826.
Der isolierte Staat. Cited in P. Hall, Von Thunen's Isolated State, Pergamon
Press, Oxford,
1966.
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