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2000.
“Nitrification”
: C160-181.
2001.
“Dynamics of resistant soil carbon of Midwestern agricultural soils measured by naturally-occurring 14C abundance”
104: 239-256.
2003.
“Interpretation of soil carbon and nitrogen dynamics in agricultural and afforested soils”
67: 1620-1628.
2000.
“Quantitative analysis of ammonia oxidising bacteria using competitive PCR”
32: 167-175.
2003.
“U.S. agriculture and climate change: New results”
57: 43-69.
2003.
“Glomalin, an arbuscular-mychrrhizal fungal protein, responds to landscape-level management”
253: 293-299.
1999.
“Keeping track of carbon (Letter)”
285: 1849.
2003.
“Climate variability in the North Central Region: Characterizing drought severity patterns”
: 56-73.
2001.
“Structural design for management and visualization of information for simulation models applied to a regional scale”
33: 77-84.
2002.
“Site to regional scaling”
: 37-41.
2003.
“Long-term sustainability of the tropical and subtropical rice and wheat system: An environmental perspective”
: 27-43.
2000.
“Nitrogen in the environment”
: C190-200.
2002.
“Incorporating ecology into agriculture”
17: 490-491.
2000.
“Species density and productivity at different spatial scales in herbaceous plant communities”
89: 417-427.
2004.
“The role of in-stream vs. allochthonous N in stream food webs: Modeling the results of a nitrogen isotope addition experiment”
23: 429-448.
2002.
“Public preferences for a clean, green agricultural machine”
: 31-42.









