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- Publication:
- Produced: 11 December 1927
- Subject(s):
- USSR
- Archival Collection:
- The Alan Gregg Papers (Profiles in Science)
- Publication:
- Produced: 6 December 1927
- Subject(s):
- USSR
- Archival Collection:
- The Alan Gregg Papers (Profiles in Science)
- Publication:
- Produced: [ca. 5 December 1927]
- Subject(s):
- USSR
- Archival Collection:
- The Alan Gregg Papers (Profiles in Science)