Tulp, Orien L, Frantz Sainvil, Rolando Branly, Andrew Sciranka, Roberto Guibert, and George P Einstein. “Micronutrient Mineral and Nutrient Content of Volcanic Soils and Creeks from the Montserrat Soufriere Hills Volcano. Nature’s Fertilizer: Mineral Nutrient Content of Volcanic Soils”. European Journal of Applied Sciences 11, no. 2 (March 17, 2023): 143–156. Accessed May 30, 2026. https://scholarpublishing.org/journals/index.php/EJAS/article/view/8521.