Preliminary research of the effect of shading and pruning on cocoa production. Pelita Perkebunan (a Coffee and Cocoa Research Journal), [S. l.], v. 6, n. 2, p. 47–51, 1990. DOI: 10.22302/iccri.jur.pelitaperkebunan.v6i2.367. Disponível em: https://mail.ccrjournal.com/index.php/ccrj/article/view/367. Acesso em: 16 jun. 2026.