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Energy from tropical crops : energetic evaluation of the agricultural and industrial production of ethanol and vegetable oil / J. van der Ham, J.B.P. de Loor, M. Flach.
- Agricultural university. Department of tropical crops,
- 1985.
- Wageningen :
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Towards a classification of tropical tree fruits / E.W.M. Verheij.
- Agricultural university. Department of tropical crops,
- 1985.
- Wageningen :