TY  - BOOK
AU  - BARRETO Humberto
TI  - Intermediate microeconomics with microsoft excel
SN  - 9780521899024
U1  - X:71:(D6, 9(B), P9 
PY  - 2009///
CY  - Cambridge
PB  - Cambridge Universtiy Press        
KW  - Economics
ER  -