1. Soil care for better crops;Adem;Aust. Country,1982
2. Plow-layer porosity and surface roughness from tillage as affected by initial porosity and soil moisture at tillage time;Allmaras,1967
3. A compact rotary sieve and the importance of dry sieving in physical soil analysis;Chepil,1962
4. The basis for a procedure to specify soil physical properties of a seed bed for wheat;Collis-George;Aust. J. Soil Res.,1979
5. Internal structure of a tilled soil;Dexter;J. Soil Sci.,1976