@book{1503,
	author = {Ogg, William G.},
	title = {Chemistry and crop nutrition.},
	publisher = {Royal Institiute of chemistry},
	year = {1955.},
	series = {Royal Institute of Chemistry. Lectures, monographs and reports, 1955,No.5            },
	address = {London,},
	note = {Nintb Dalton Lecture}
}