K. P. G. D. P. P. K. S. and S.P. Wani, “Soil Fertility Mapping using GIS in Three Agro-climatic Zones of Belgaum District, Karnataka”, JISSS, vol. 63, no. 2, Jul. 2015, Accessed: Jun. 26, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/JISSS/article/view/50627