The validity of occupational aptitude tests
| Prif Awdur: | |
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| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
John Wiley & Sons, Inc.
©1966.
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| Cyfres: | Research Program of the Institute of Industrial Relations, University of California
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| Pynciau: |