1. Klima, Jord og Planter;Aslyng,1976
2. Report of Investigations;Canada Department of Agriculture,1943
3. Dynamics of wind erosion: V. Cumulative intensity of soil drifting across eroding fields;Chepil;Soil Sci.,1946
4. Dynamics of wind erosion: VI. Sorting of soil material by the wind;Chepil;Soil Sci.,1946
5. Deep plowing of sandy soil;Chepil,1962