Norman Hudson. (1991). FAO soils bulletin N.64: A study of the reasons for success or failure of soil conservation projects. Rome: FAO.
Styl ChicagoNorman Hudson. FAO Soils Bulletin N.64: A Study of the Reasons for Success or Failure of Soil Conservation Projects. Rome: FAO, 1991.
Citace podle MLANorman Hudson. FAO Soils Bulletin N.64: A Study of the Reasons for Success or Failure of Soil Conservation Projects. Rome: FAO, 1991.
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