TY  - BOOK
AU  - McConnell,Campbell R
AU  - Brue,Stanley L.
TI  - Economics: principles, problems, and policies 
SN  - 0070455597
U1  - 330 
PY  - 1993///
CY  - New York, NY.
PB  - McGraw-Hill
KW  - Economía
ER  -