TY  - BOOK
AU  - O'Sullivan, Arthur 
AU  -  Sheffrin, Steven M. 
TI  - Economics : : principles and tools
SN  - 0130315443
AV  - HB 171.5 .O78 2001 
PY  - 2001///
CY  - Upper Saddle River, N.J. : 
PB  - Prentice Hall
KW  -  Economics.
ER  -