Graaff, J. d. (2007). Monitoring and evaluation of soil conservation and watershed development projects. Science Publishers.
Style de citation Chicago (17e éd.)Graaff, J. de. Monitoring and Evaluation of Soil Conservation and Watershed Development Projects. Enfield, NH: Science Publishers, 2007.
Style de citation MLA (8e éd.)Graaff, J. de. Monitoring and Evaluation of Soil Conservation and Watershed Development Projects. Science Publishers, 2007.
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