| title | ISBN-13 | year of publication |
|---|---|---|
| The Essential Guide to HIV and Aids | 978-1-910843-63-5 | 2018 |
| The Essential Guide to Prostate Cancer | 978-1-910843-76-5 | 2018 |
| The Essential Guide to Skin Cancer | 978-1-910843-57-4 | 2017 |
| US Energy Politics and Policy | 978-0-8133-4829-2 | 2021 |
R.D. · R. Duffy · Robert D. · Robert J. Duffy · Robert M. Duffy