2 books • 2 series
2010 Monitoring and Tracking Wet Nitrogen Deposition at Rocky Mountain National Park, August 2012 (Natural Resource Report Nps/Nrss/Ard/Nrr?2012/562)
2009 Monitoring and Tracking Wet Nitrogen Deposition at Rocky Mountain National Park, September 2011 (Natural Resource Report Nps/Nrss/Ard/Nrr-2011/442)