Barn Blueprint

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“Ventilating a barn having a silo at or near the center. The fresh air enters at AB, and finds its way to the foul-air shaft CE, passing out through the cupola F. The ventilators, CE, are spaces in the walls around the silo."—The Federal Digest, 1921

Source

The Federal Digest Farm Economy (Minneapolis, MN: Better Farming Association, 1921)

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