TY  - BOOK
AU  - Guzman, Juliet S.
AU  - Aguirre, Danilo B. 
TI  - Mastering the principles of economics
SN  - 9710864890
U1  - GSL 330 G989 2004  
PY  - 2004///
CY  - Mandaluyong City, Philippines
PB  - National Book Store.
KW  - Principles of economics
ER  -