R. B · R Bhattarai · Rai Bahadur · Ria Bitter
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Simple Machines | 978-1-55074-399-9 (1-55074-399-6) | 1997 | Deborah Hodge |
| Solids, Liquids and Gases | 978-1-55074-401-9 (1-55074-401-1) | 2005 | Ontario Science Centre |