id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-72354	Niskanen, Raina	Effect of extractant pH on the release of soil phosphorus, aluminium and iron by ammonium fluoride	1989	6	.pdf	application/pdf	2689	188	67	Maataloustieteellinen A ikakauskirja Vol. 61: 67—72, 1989 Effect of extractant pH on the release of soil phosphorus, aluminium and iron by ammonium fluoride RAINA NISKANEN University of Helsinki, Department of Agricultural Chemistry, SF-00710 Helsinki, Finland Abstract. Fractionation of soil phosphorus.	cache/afs-72354.pdf	txt/afs-72354.txt