TY  - BOOK
AU  - Case, Karl E.
AU  - Fair, Ray C.
AU  - Oster, Sharon M.
TI  - Principles of economics
SN  - 9780273753728 (pbk.)
AV  - HB171.5 CAS 
PY  - 2012///
CY  - Boston
PB  - Pearson Education 
KW  - Economics
N1  - Includes index
ER  -