R.D. · Raimund Diederichs · Raymond Dittrich
| title | ISBN-13 | year of publication |
|---|---|---|
| Historical Dictionary of Bulgaria | 978-1-4422-4179-4 | 2014 |
| Historical Dictionary of Bulgaria | 978-0-8108-4901-3 | 2006 |
| Historical Dictionary of Bulgaria | 978-0-8108-3177-3 | 1997 |
| Rusland / druk 1: een geschiedenis | 978-90-450-1712-9 | 2009 |
| The A to Z of Bulgaria | 978-0-8108-7202-8 | 2010 |
Atlas-Contact · Rowman & Littlefield Publishers · Scarecrow Press