Ballada, Win Lu. <br/><br/>Investment mathematics made easy/ Win Lu Ballada.  -- Quezon City:  DomDane Publishers,  1998. <br/>ix, 273 p.:  ill.;  23 cm. <br/><br/><label>Subjects--Topical Terms: </label><br/>Investment -- Mathematics.<br/><br/><label>Dewey Class. No.: </label>GR 332.6 B210 1998