 | Biblioteca Conmemorativa Orton - 1954 - 718 páginas
PETIT , J. First results of an experiment on artificial shade for cocoa trees at Yangambi . In Cocoa , Chocolate and Confectionery Alliance , Ltd. Report of the Cocoa Conference , 1957. London , 1958. pp . 227-241 . | |
 | 1971 - 314 páginas
CUNNINGHAM , R. J. A review of the use of shade and fertilizer in the culture of cocoa . West African Cocoa Research ... ( 2179 HIMME , M. VAN y PETIT , J. First results of an experiment on artificial shade for cocoa trees at Yangambi . | |
 | Alfonso Martínez - 1984 - 68 páginas
HARDY , F. La sombra del cacao en relación con la intercepción de lluvia . Turrialba ( Costa Rica ) 12 ( 2 ) : 80-86 . ... HIMME , H. VAN y PETIT , J. First results of an experiment on artificial shade for cacao trees at Yangambi . | |
 | 588 páginas
First Results of an Experiment on Artificial Shade for Cocoa at Yangambi , by M. M. van Himme and M. J. Petit . Field experiments carried out at Yangambi , Belgian Congo , on young clonal cacao trees grown under various degrees of light ... | |
 | 294 páginas
PETIT , J. First results of an experiment on artificial shade for cocoa trees at Yangambi . In Cocoa , Chocolate and Confectionery Alliance , Ltd. Report of the Cocoa Conference , 1957. London , 1958. pp . 227-241 . 401. | |
 | 314 páginas
CUNNINGHAM , R. J. A review of the use of shade and fertilizer in the culture of cocoa . West African Cocoa Research ... J. First results of an experiment on artificial shade for cocoa trees at Yangambi . In Cocoa , Chocolate and ... | |
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