@article {4994,
	title = {Are Threatened High-Elevation Spruce-Fir Forests Impacted by Aluminum Toxicity and Calcium Loss?},
	year = {2008},
	month = {circa},
	institution = {Michigan Technological University},
	address = {Houghton, MI},
	keywords = {Acid rain, Air particles -- Deposition, Air quality, Forests, Fraser fir, Red spruce, Soil acidity, Soils},
	issn = {PMIS 110118},
	url = {http://diglib.lib.utk.edu/dotsdata/Webster_AreThretenedHighElevationSpruceFirForestsImpactedByAluminumToxicityAndCalciumLoss_2008.pdf},
	author = {Webster, Christopher R}
}
