Nitrogen in agricultural systems - Schepers, J. S.,; Raun, W. R.,; Follett, R. F.,; Fox, R. H.,; Randall, G. W.,; Baltensperger, David,; Barbarick, Kenneth,; Roberts, Craig,; Logsdon, Sally,; Savin, Mary,; Krishnan, Hari,; Ulery, April,; et al. (American Society of Agronomy, Inc. ; Crop Science Society of America, Inc. ; Soil Science Society of America, Inc., 2008)
Agronomy Monograph 49