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Showing items 1 through 9 of 2.
  1. Library Resource
    Journal Articles & Books
    December, 1977
    France, Nigeria, Spain, Zambia, Iraq, Australia, Côte d'Ivoire, Kenya, Jordan, Morocco, Syrian Arab Republic, Libya, Somalia, Madagascar, Tanzania, Botswana, Argentina, India, Sudan, Lebanon

    There is a urgent need for a better understanding of the risks of soil degradation and their geographical distribution as well as a better knowledge of where degradation occurs at present. it would be desirable to combine soil conservation activities with other elements for increasing crop production.Erosion, salinity and alkalinity and the loss of soil fertility seriously reduce the natural potential of soils to produce food fibres. During the meeting, many criteria to assess the various types of soil degradation were outlined by the experts.

  2. Library Resource
    Policy Papers & Briefs
    December, 1977
    Madagascar, Africa

    Dans sa premire partie, cette tude tente de faire le point de la situation de l'effort de pche actuel exerc dans les principaux plans d'caux du Pays. Les seuls paramtres disponibles pour cette valuation datent de 10 20 ans, aucune donne plus rcente n'ayant t recueillie. Cette lacune est due en grande partie la faiblesse de la structure de la Division Pche et Pisciculture de la Direction des Eaux et Forts, reste jusqu'alors au stade embryonnaire, ainsi qu'au manque de budget.

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