TY  - BOOK
AU  - Zadoks,Jan C.
TI  - Development of farming systems: evaluation of the five-year period 1980-1984 
SN  - 9022009696
PY  - 1989///
CY  - Wageningen
PB  - Pudoc
KW  - Agricultural systems
KW  - Netherlands
KW  - Nagele
ER  -