TY  - BOOK
AU  - Collinge,Robert A.
AU  - Ayers,Ronald M.
TI  - Economics by design: principles and issues 
SN  - 0133737888
AV  - HB171.5 .C845 1997
U1  - 330 20
PY  - 1997///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Economics
N1  - Includes bibliographical references and index
ER  -