Medina, Roberto G. <br/><br/>Principle of economics/ Roberto G. Medina.  -- Quezon City, Philippines;  Rex Book Store.,  2001. <br/>ix, 286 p.;  ill.  22 cm. <br/><br/> Includes indexes. <br/><br/><label>ISBN: </label>9712336107 <br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.<br/><br/><label>Dewey Class. No.: </label>GSL 330 M468 2001