C.H. · C.P. · C.P. Haskins · P. H.
The MIT Press · University of Michigan Library
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Sociedades Y Hombres | 978-1-125-93211-7 (1-125-93211-2) | 1953 |
| The Search for Understanding | 978-0-262-08042-2 (0-262-08042-7) | 1970 |