J. F. · Josef Fröhlich · Josef Frohlich
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Frolik Defection: The Memoirs of a Czech Intelligence Agent | 978-0-552-10056-4 (0-552-10056-0) | 1976 | |
| Špión vypovídá | 978-80-235-0004-2 (80-235-0004-X) | 1990 | Josef Frolík |