Canadian Forest Service Publications

Nitrate and exchangeable ammonium nitrogen (chapter 6) 2007. Maynard, D.G.; Kalra, Y.P.; Crumbaugh, J.A. Pages 71-80 in M.R. Carter and E.G. Gregorich, editors. Soil sampling and methods of analysis (2nd edition). CRC Press, Taylor and Francis Group, Boca Raton, FL. 1264 p.