Cost–Benefit Analysis of Soil Degradation and Restoration - Principles of Sustainable Soil Management in Agroecosystems - page 256

Ward, W.A. 1976a. The Bruno Criterion in Two Numeraires. Course Notes, CN-22 The
International Bank for Reconstruction and Development, Washington, DC.
Ward, W.A. 1976b. Adjusting for Over-Valued Local Currency: Shadow Exchange Rates and
Conversion Factors. Course Notes, CN-28, The International Bank for Reconstruction
and Development, Washington, DC.
Wolman, M.G. 1993. Soil Erosion and Crop Productivity: A World Wide Perspective. Paper
presented at Soil Erosion and Crop Productivity Symposium, Denver, CO.
Wood, S., K. Sebastian, and J. Chamberlin. 2003. Land Quality Agricultural Productivity
and Food Security, A Spatial Perspective. In Land Quality, Agricultural Productivity
and Food Security , ed. Keith Wiebe, pp. 47-110. Northampton, MA: Edward Elgar
Publishing, Ltd.
Wright, B. 2011. Biofuels and Food Security: Time to Consider Safety Values? IPC Policy
Focus . Available at http://www.agritrade.org/Publications/documents/biofueldiversion
optionspolicyfocusinal.pdf .
Zhao, F. 1988. Some new evidence on factors related to agricultural growth in the Third
World. M.S. thesis, Department of Agricultural Economics and Rural Sociology, Ohio
State University.
Zhao, F., F. Hitzhusen, and W. Chern. 1991. Impact and Implications of Price Policy and Land
Degradation on Agricultural Growth in Developing Countries. Agric Econ 5:311-324.