Norman Hudson. (1991). FAO soils bulletin N.64: A study of the reasons for success or failure of soil conservation projects. Rome: FAO.
Chicago ZitierstilNorman Hudson. FAO Soils Bulletin N.64: A Study of the Reasons for Success or Failure of Soil Conservation Projects. Rome: FAO, 1991.
MLA ZitierstilNorman Hudson. FAO Soils Bulletin N.64: A Study of the Reasons for Success or Failure of Soil Conservation Projects. Rome: FAO, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.