@article {613,
	title = {Can the foliar nitrogen concentration of upland vegetation be used for predicting atmospheric nitrogen deposition? Evidence from field surveys. },
	journal = {Environmental Pollution},
	volume = {107},
	year = {2000},
	pages = {367-376},
	author = {Hicks, W.K. and Leith, I.D. and Woodin, S.J. and Fowler, D.}
}
