TY  - GEN
AU  - Spedding, C. R. W.,
TI  - Agricultural Systems : : An International Journal 
SN  - 0308521X
AV  - S3 A37
PY  - 1985///
CY  - England
PB  - Elsevier Applied Science Publishers Ltd
KW  - Agricultural systems
KW  - Periodicals
KW  - Mathematical models
KW  - Economic aspects
N1  - Includes tables; Includes bibliographical references; Agricultural systems are operating for many different purposes from the making of money to the feeding of people, and they occur in many different forms all over the world. They involve many different products and the use of many different resources and each of these can be expressed in many different terms. Agricultural activity involves management and people and affects the entire community, whether they are directly engaged or not
ER  -