VILLASON, N.; OLGUERA, D. Physico-Chemical Characteristics of Soils under Cacao Production System in Davao de Oro, Philippines. Southeastern Philippines Journal of Research and Development, [S. l.], v. 25, n. 1, p. 115–134, 2020. DOI: 10.53899/spjrd.v25i1.75. Disponível em: https://journal.usep.edu.ph/index.php/Southeastern_Philippines_Journal/article/view/75. Acesso em: 30 oct. 2025.