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1992.
1993.
“Microbial biomass”
: 753-774.
1994.
“14C and 15N in tree soil-systems”
14: 1163-1176.
1994.
1996.
1995.
1994.
“Effects of nitrogen addition on successional dynamics and species diversity in Michigan old-fields”
86: 794-803.
1998.
2001.
“Evaluation of the CERES-Maize water and nitrogen balances under tile-drained conditions”
62: 189-199.
1999.
1998.
“Fertilization effects on species density and primary productivity in herbaceous plant communities”
89: 428-439.
2000.
“Denitrification”
: 272-290.
1999.
1989.
“A comparison of methods for estimating soil seed banks”
78: 1079-1093.
1990.
1993.
1995.
1995.
1996.
2000.