@book{29126,
	author = {Symposium on Potassium in Soils, Crops and Fertilizers,},
	title = {Potassium in soils, crops and fertilizers.},
	publisher = {Indian Society of Soil Science,},
	year = {1976.},
	series = {Bulletin - Indian Society of Soil Science ; no. 10},
	address = {New Delhi :}
}