Woodruff, L. G., Cannon, W.F., Eberl, D.D., Smith, D.B., Kilburn, J.E., Horton, J.D., Garrett, R.G., Klassen, R.A. (2009). Continental-scale patterns in soil geochemistry and mineralogy: results from two transects across the United States and Canada. In Geochemical studies of North American soils: Results from the pilot study phase of the North American Soil Geochemical Landscapes Project, D.B. Smith (ed.). Applied Geochemistry, Volume 24, Issue 8, p. 1369-1381.
Soil sampling pilot study, Canadian component, Manitoba and North Dakota, 2004. (more)
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