Scherr,Sara J. (1999). Soil degradation: A threat to developing country food security by 2020. International Food Policy Research Institute.
Chicago Edition CitationScherr,Sara J. Soil Degradation: A Threat to Developing Country Food Security by 2020. Washington: International Food Policy Research Institute, 1999.
MLA Edition CitationScherr,Sara J. Soil Degradation: A Threat to Developing Country Food Security by 2020. International Food Policy Research Institute, 1999.
Warning: These citations may not always be 100% accurate.