Concerning Physical Soil Research (Ueber die Physikalische Bodenuntersuchung),
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
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Soil types can be studied in four different manners Geologic research concerned with the history of soil origin petrographic investigation which attempts to identify the components, plus the mechanical and minerological-chemical properties of soils physical research which investigates the external properties of soils and the plant-biological research dealing with the effects of soil on the development of the higher and lower flora and especially the effect on domestic plants.
- Soil Mechanics