TY  - BOOK
AU  - Medina, Roberto G.
TI  - Principle of economics
SN  - 9712336107
U1  - GSL 330 M468 2001 
PY  - 2001///
CY  - Quezon City, Philippines
PB  - Rex Book Store.
KW  - Economics
N1  - Includes indexes
ER  -