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- Publication:
- Produced: [ca. 1939]
- Archival Collection:
- The Alan Gregg Papers (Profiles in Science)
- Publication:
- Produced: 11 January 1939
- Archival Collection:
- The Lawrence Kolb Papers (Profiles in Science)
- Publication:
- Produced: 02 March 1939
- Archival Collection:
- The Lawrence Kolb Papers (Profiles in Science)