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| Agricultural experiment stations (78) |
| Agriculture -- Research (78) |
| Alabama Polytechnic Institute. Agricultural Experiment Station (78) |
| Agriculture -- Experimentation (1) |
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Now showing items 1-5 of 78
| Agricultural experiment stations (78) |
| Agriculture -- Research (78) |
| Alabama Polytechnic Institute. Agricultural Experiment Station (78) |
| Agriculture -- Experimentation (1) |
| Field experiments (1) |