“THE PHOSPHATE REQUIREMENT OF CALCAREOUS SOIL - Results of Mitscherlich Pot Tests and Tomato Seedling Tests Applied to a Typical Calcareous Clay Soil from Antigua, B. W. I”. Tropical Agriculture, vol. 15, no. 8, Aug. 1938, https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/5688.