“Status of Plant Available Sulphur and Its Relationship to Other Soil Characteristics in Pothwar Soils: Plant Available Sulphur in Soil”, Pakistan Journal of Scientific & Industrial Research, vol. 52, no. 2, pp. 84–90, Apr. 2009, Accessed: Mar. 10, 2026. [Online]. Available: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/521