Leonard, Eamonn. 2007. Competition for soil nitrate and invasive weed resistance of three shrub-steppe growth forms. Logan, UT: Utah State University. Thesis. 78 p.
Leonard, Eamonn. 2007. Competition for soil nitrate and invasive weed resistance of three shrub-steppe growth forms. Logan, UT: Utah State University. Thesis. 78 p.