Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 58.
  1. Library Resource
    Document aggregated from Resource Equity Landwise Database
    janvier, 1973
    Grenade
  2. Library Resource
    Rapports et recherches
    avril, 1973
    Afrique

    Black cotton soils are one of those clays with a high content of montmorillenite. These have a very high plasticity leading to high rates of expansion on wetting followed by shrinkage and considerable cracking on drying. The black cotton soils of Ethiopia have liquid limits ranging between 80 and 120 and plasticity indices of 40 to 80 (see figure l). The activity of these clays is between 0.8 and 1.5. Thus by the Skempton classification the activity of these clays is considerable and, as one would expect, swelling potential is high.

  3. Library Resource
    Documents et rapports de conférence
    mars, 1973
    Tunisie

    The origins of the cadastre in Tunisia go back to the Roman occupation. The vestiges of a Roman cadastral system were first brought to light through examination of plans and topographical maps established from ground surveys; from this examination it was possible to determine the characteristics of both the orientation of the lines arid the dimensions of the grid.

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