Gross heating value of various shade-trees wood in coffee plantation in Costa Rica and its relation with extractives and specific gravity: : Gross heating value of various shade-trees wood in coffee plantation. Pelita Perkebunan (a Coffee and Cocoa Research Journal), [S. l.], v. 34, n. 3, p. 183–190, 2018. Disponível em: https://mail.ccrjournal.com/index.php/ccrj/article/view/311. Acesso em: 30 apr. 2026.