J R · J. Roberts · Jo Roberts · Joe R.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Bengal, The Cold Weather 1873: A Dream Of Edward Lear In India | 978-93-81626-89-4 (93-81626-89-8) | 2012 |
| Elementary Number Theory: A Problem Oriented Approach | 978-0-262-68028-8 (0-262-68028-9) | 1977 |