TY  - BOOK
AU  - Walker, B. H,
TI  - Management of Semi - Arid Ecosystems
SN  - 0444417591
U1  - 333 
PY  - 1979///
CY  - Amsterdam
PB  - Elsevier Science Publishing Co.
KW  - Arid Regions
KW  - Economics of land & energy
KW  - Land Use
ER  -