TY  - BOOK
AU  - Walker, B.H. ed
TI  - Management of semi arid ecosystems
SN  - 0444417591
U1  - 577.4.008 N79 
PY  - 1979///
CY  - Amsterdam
PB  - Elsevier Scientific
KW  - Land use case studies, Arid regions case studies
ER  -