TY  - BK
AU  - Wiebe,K.
TI  - Land quality, agricultural productivity, and food security:  Biophysical processes and economic choices at local, regional, and global levels
SN  - 1-840-64752-3
U1  - 338.14 
PY  - 2003///
CY  - Northampton, MA (USA)
PB  - Edward Elgar, 
ER  -