Boucher, D. H., Hansen, M., Risch, S. and Vandermeer, J. H.. "6. Agriculture".
Costa Rican Natural History, edited by Daniel H. Janzen, Chicago: University of Chicago Press, 1983, pp. 66-117.
https://doi.org/10.7208/9780226161204-008
Boucher, D., Hansen, M., Risch, S. & Vandermeer, J. (1983). 6. Agriculture. In D. Janzen (Ed.),
Costa Rican Natural History (pp. 66-117). Chicago: University of Chicago Press.
https://doi.org/10.7208/9780226161204-008
Boucher, D., Hansen, M., Risch, S. and Vandermeer, J. 1983. 6. Agriculture. In: Janzen, D. ed.
Costa Rican Natural History. Chicago: University of Chicago Press, pp. 66-117.
https://doi.org/10.7208/9780226161204-008
Boucher, D. H., Hansen, M., Risch, S. and Vandermeer, J. H.. "6. Agriculture" In
Costa Rican Natural History edited by Daniel H. Janzen, 66-117. Chicago: University of Chicago Press, 1983.
https://doi.org/10.7208/9780226161204-008
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