Aptitude Test Service.
| Role | Title | Holding Repository | |
|---|---|---|---|
| referencedIn | Hay, Edward N. (Edward Northup), 1891-1958. Edward N. Hay. Series 1. Personal and professional associations files, 1913-1957, bulk 1947-1957. | Cornell University Library |
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| associatedWith | Hay, Edward N. (Edward Northup), 1891-1958. | person |
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