Ciro V, Héctor J., and Luis R. Pérez-Alegría. “SPECIFIC HEAT OF PARCHMENT COFFEE”. The Journal of Agriculture of the University of Puerto Rico 85, no. 1-2 (April 1, 2001): 97–100. Accessed April 25, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/3161.