Goltenboth, Friedhelm, and Paciencia P. Milan. “Biological Sinks for Carbon Dioxide – An Option for Agroforestry Systems in the Tropics”. Annals of Tropical Research 37, no. 1 (May 28, 2015): 129–141. Accessed December 22, 2024. https://atr.vsu.edu.ph/article/view/244.