Rizaldo, Gregorio N. <br/><br/>Advanced algebra  mathematical concepts for fourth year Gregorio N. Rizaldo, E. Catabijan, E. De Guzman  - Manila  Philippine Book Company  1983 <br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.<br/><br/><label>LC Class. No.: </label>QA 154.2 R59 1983