id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5885	TURTOLA, E.	Preface	2007	3	.pdf	application/pdf	1456	49	43	Although the decrease in the bal- ance values indicates a decreased potential for nutrient losses to the environment, the actual trend in the losses also depends on many other factors, such as changes in the proportion of annual and perennial crops, changes with time in the content of soil organic matter and in soil structure, and fluctuations in climatic conditions. There have been only minor efforts in AEP to promote improvement of soil structure or proper drainage of fields.	cache/afs-5885.pdf	txt/afs-5885.txt