TY  - BOOK
AU  - Ungar, E.D.
TI  - Management of agropastoral systems inas semiarid region
T2  - Simulation monographs
SN  - 9022009467
U1  - 633.202 21st ed.
PY  - 1990///
CY  - Wageningen
PB  - Pudoc
KW  - Agro pastoral systems
ER  -