id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71779	Kaila, Armi	Aluminium and acidity in Finnish soils	1971	9	.pdf	application/pdf	4722	257	68	In the mineral soils this part of soil acidity ranges from 0.3 to 27 me/100 g. There is no significant diffe- rence between the mineral soil groups in this respect, though the mean value of clay soils tends to be somewhat higher than the means of the coarser mineral soils. Modern concepts of soil acidity emphasize the role of aluminium.	cache/afs-71779.pdf	txt/afs-71779.txt