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3
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Frames matter : a comparison of different techniques of monitoring soil loss in Lesotho : a minor field study / Per-Erik Mellander, Tobias Robinson.
- Swedish university of agricultural sciences. IRDC,
- 1994.
- Uppsala :
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Rural finance : a review of issues and experiences / Lars-Erik Birgegård.
- Swedish university of agricultural sciences. IRDC,
- 1993.
- Uppsala :
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Métodos tradicionales de conservación de suelos y aguas en la primera region, Nicaragua : a minor field study / Erik Hanner.
- Swedish university of agricultural sciences. IRDC,
- 1996.
- Uppsala :