5 books • 4 series
Productivity Effects of Cropland Erosion in the United States (Routledge Revivals)
Resource and Environmental Effects of U.S. Agriculture (Routledge Revivals)
Resources and Global Food Prospects (Technical Papers, #184)
Resource and Environmental Effects of United States Agriculture
World Food Situation (Resources for the Future) (Routledge Revivals) (Routledge Revivals)