Principles of economics (with taxation and agrarian reform) : simplified 
Marcelino, Ramon Benedicto N. 
 -  National Book Store,  2010 
 - xiv, 238 p. 
9-71087102-1
Economics -- Study and teaching -- Philippines.
F 330.44 P9451 2010
                        9-71087102-1
Economics -- Study and teaching -- Philippines.
F 330.44 P9451 2010