| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Challenges to Empiricism | 978-O-915144-89-1 (O-915144-89-1) | 1980 |
H. M. · Harald March · Harald Marek · Harald Mark · Harald Marx · Harold (ed.) MORICK · Harold Marsh · Harold Merskey · Harold Morris · Harold Mouras