| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| All About Chemistry O Level Textbook | 978-981-06-3115-4 (981-06-3115-4) | 2012 |
| Science Discovery For Lower Decondary 2nd Edition - Theory Workbook | 978-981-06-0780-7 (981-06-0780-6) | 2008 |
| Science Discovery for Lower SEcondary Volume 2 2nd Edition | 978-981-06-0777-7 (981-06-0777-6) | 2008 |
D,. H.. · D. M. · (D-R) · Dr. Rex · M. H. · R. H. · R. M. · Rex Heyworth · Rex M. Heyworth