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Subject
- Aeronautical charts887
- Military intelligence856
- Espionage493
- Soviet Union--Administrative and political divisions--Maps493
- Soviet Union--Maps493
- Soviet Union--Military policy493
- Society157
- Boundaries155
- Population117
- Demography87
- Census85
- Sex ratio82
- Literacy79
- Housing74
- Labor supply73
- Caste72
- Human settlements72
- Villages72
- Elections60
- Voting60