TY  - BOOK
AU  - Sheffrin, Steven M
AU  - O'Sullivan, Arthur
TI  - Economics : principles and tools (fourth edtion)
SN  - 9780131479715
AV  - HB 171.5 Osu 
PY  - 2006///
CY  - 
PB  - Pearson
KW  - ECONOMICS
ER  -