TY  - BOOK
AU  - Mansfield, Edwin                                                                                                                                                                                                                                                                                            
TI  - Economics : principles, problems, decisions                                                                                                                                                                                                                                                                                                                                                                     
SN  - 0-393-95475-7
U1  - 330 M2871 1986                                                                                       
PY  - 1986///
CY  - New York
PB  - W. W. Norton and Company 
KW  - Economía
ER  -