<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Webster, Christopher R</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Are Threatened High-Elevation Spruce-Fir Forests Impacted by Aluminum Toxicity and Calcium Loss?</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Acid rain</style></keyword><keyword><style  face="normal" font="default" size="100%">Air particles -- Deposition</style></keyword><keyword><style  face="normal" font="default" size="100%">Air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">Forests</style></keyword><keyword><style  face="normal" font="default" size="100%">Fraser fir</style></keyword><keyword><style  face="normal" font="default" size="100%">Red spruce</style></keyword><keyword><style  face="normal" font="default" size="100%">Soil acidity</style></keyword><keyword><style  face="normal" font="default" size="100%">Soils</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">circa</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://diglib.lib.utk.edu/dotsdata/Webster_AreThretenedHighElevationSpruceFirForestsImpactedByAluminumToxicityAndCalciumLoss_2008.pdf</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Michigan Technological University</style></publisher><pub-location><style face="normal" font="default" size="100%">Houghton, MI</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>