TY  - BOOK
AU  - Case, Karl E. 
AU  - Ray C. Fair 
AU  - Sharon M. Aster 
TI  - 	Principles of the economics : : horizon edition/ 
SN  - 	978-0-273-77988-9
U1  - Fil. 330 C267p 2013 tenth edition
PY  - 2013///.
CY  - England : 
PB  - Pearson education , 
KW  - 1. Economics
N1  - Includes index and glossary
ER  -