1. Our Nutrient World: The Challenge to Produce More Food and Energy with Less Pollution;Sutton,2013
2. An Urgent Call to Action: Report of the State-EPA Nutrient Innovations Task Group,2009
3. The Facts About Nutrient Pollution,2012
4. Nitrogen and Phosphorus Pollution and Harmful Algal Blooms in Lakes, EPA Watershed Academy Webcast;Piotrowski J.,2011
5. Determination of Total Kjeldahl Nitrogen by Semi-Automated Colorimetry,1993