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Topic
- Population 15
- Food supply 5
- Barley 2
- Croplands 2
- Brown, Lester R. (Lester Russell), 1934- 1
Work Type
- color photographs 15
- color slides 15
- photographs 15
- charts (graphic documents) 5
Format
- image/tiff 15
Decade
- 1960-1969 15