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- 4-H clubs 37
- 5th Dimension (Musical group) 1
- Abandoned farms 6
- Abdul-Jabbar, Kareem, 1947- 5
- Abelson, Philip Hauge 1
- Aberdeen-Angus cattle 7
- Abert Rim Wilderness (Or.) 2
- Abert, Lake (Or.) 2
- Abnormalities 2
- Academic librarians 5
- Academic libraries 3
- Adair, John 4
- Adams, Frank William 14
- Administration Building 17
- Advertising 1
- Advertising--Milk 2
- Advisory boards 4
- Aerial fertilizing 1
- Aerial spraying and dusting in agriculture 6
- Aerial spraying and dusting in forestry 2