Gurjar, D.S. and Yadav, B.R. (2013) “Seasonal Variation in pH, Salinity, Nitrate, Fluoride and Heavy Metals in Irrigated Soils of South-West Region of Delhi, India”, Journal of the Indian Society of Soil Science, 61(1). Available at: https://epubs.icar.org.in/index.php/JISSS/article/view/31751 (Accessed: 17 July 2026).