“RECENT INVESTIGATION ON SUGAR-CANE AND SUGAR-CANE SOILS IN TRINIDAD. II. - Interactions of Lime With Nitrogen, Phosphate and Potash, and With Pen Manure, in Relation to Yield of Cane. - Continued”. Tropical Agriculture, vol. 12, no. 12, Dec. 1935, https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/5751.