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Soil erosion and soil-moisture conservation under old terracing system in the Palestinian Central Mountains = Virkningen av eldre terrassesystemer p�a jorderosjon og plantenes vannforsyning i Central Mountains i Palestina / Ahmad Hammad Yousef Abu Hammad.
- 631.45 H2242
- Abu Hammad, Ahmad Hammad Yousef.
- Centre for Development Studies, University of Bergen,
- 2006.
- Bergen :