Materiála du geavahussii : Historical agriculture and soil erosion in the upper Mississippi Valley hill country [electronic resource] / Stanley W. Trimble ; [foreword by Andrew Goudie].

Bajilčálus : Historical agriculture and soil erosion in the upper Mississippi Valley hill country [electronic resource] / Stanley W. Trimble ; [foreword by Andrew Goudie].

Hildobáiki : Ii hildodieđu

Dilli : Dovdameahttun