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Houssou M., . and Meunier J., . and Daniel C., . (1988) Breeding oil palm Elaeis guineensis Jacq. for drought tolerance - preliminary results in Benin. [Proceedings Paper]
Ollagnier M., . and Daniel C., . and Fallavier P., . and Ochs R., . (1988) The influence of climate and soil on potasssium critical level. [Proceedings Paper]