TY  - BOOK
TI  - Changing agriculture: an introduction to systems thinking 
SN  - 0864174896
PY  - 1992///
CY  - Kenthurst, [Australia]
PB  -  Kangaroo Press
KW  - Agriculture
KW  - Mathematical models
KW  - System theory
KW  - System analysis
KW  - BSABE
N1  - Includes bibliographical references (p. 79-[80]) and index
ER  -