Cornell University Library · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Efficiency As a Basis for Operatin and Wages | 978-1-144-38026-5 (1-144-38026-X) | 2010 |
| Efficiency as a Basis for Operation and Wages | 978-1-112-59244-7 (1-112-59244-X) | 2010 |