“Shades of Shade: Determinants of Conservation Practices in Coffee Plantations for Ecosystem Services Provision in Puerto Rico, a Preliminary Analysis” (2016) Global Journal of Science Frontier Research, 16(19), pp. 1–30. Available at: https://www.journalofscience.org/index.php/GJSFR/article/view/ (Accessed: 1 November 2026).