“PROXIMATE CONSTITUENTS OF SOIL ORGANIC MATTER IN RELATION TO ELEVATION IN THE RED FERRALLITIC SOILS OF KERALA, INDIA”. JOURNAL OF TROPICAL FOREST SCIENCE 8, no. 1 (September 23, 1995): 53–58. Accessed October 12, 2025. https://jtfs.frim.gov.my/jtfs/article/view/1718.