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3. Erosion in the Waipaoa Catchment: a Physiographic Analysis;Akehurst,1963
4. A Study of the Variations of Certain Soil Physical Properties in Relation to Units 1, 2 and 6 of the Nine Unit Landsurface Model;Alexander,1969
5. A Micropedological Study of Highly Calcareous Soils, with Particular Reference to Iraq;Al-Samarraie,1975