@book{45929,
	author = {Kemmler, G. and Tandon, H. L. S.},
	title = {Potassium deficiency and its correction in horticultural crops},
	publisher = {International Potash Institute,},
	year = {1988},
	series = {IPI. Bulletin - Fertilising for yield and quality},
	address = {Bem :}
}