Gelijke inspanning meer resultaat :
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
Contactgroep Opvoering Productiviteit,
[1950]
's-Gravenhage : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/FDD61E81-A7FA-4CD7-80BE-18E471BE5C37 |