TY  - BOOK
AU  - Packer,Arnold H.
TI  - Models of economic systems: a theory for their development and use 
SN  - 0262160528 :
U1  - 330.182 
PY  - 1972///
CY  - London
PB  - MIT Press
KW  - Economic policy
KW  - Mathematical models
KW  - Econometrics
N1  - Includes bibliographical references and index
ER  -