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学科
- United States -- Economic conditions -- 21st century[remove]5
- Potluck2
- Trust in God2
- Allegheny East expose1
- Americans -- Health and hygiene1
- Food relief -- Pennsylvania1
- Healthful living1
- Mountain viewpoint1
- Seventh-day Adventists -- Columbia Union Conference -- Finance1
- Social surveys1
- Social surveys -- United States1