@book{25254,
	author = {Sheeba s  and Korah P A (Guide)},
	title = {Sulphur Status of Major Uplands of south Kerala},
	publisher = {Department of Soil Science and Agricultural Chemistry, College of Agriculture},
	year = {1991},
	address = {Vellayani},
	url = {https://krishikosh.egranth.ac.in/handle/1/5810130669}
}