Land quality, agricultural productivity, and food security : biophysical processes and economic choices at local, regional, and global levels /
Wiebe, Keith Daniel,1962-
Cheltenham : Edward Elgar,
c2003.
"Preliminary results were discussed at a workshop hosted by the US Department of Agriculture's Economic Research Service in Washington, DC, in 2001"-pref.
Includes bibliographical references and index.
Land capability for agriculture
Agricultural productivity
Food supply