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Bulletin, Issues 3-4
Bok av Harvey Washington Wiley
Bulletin, Issues 70-77
Bok av Harvey Washington Wiley
Principles and Practice of Agricultural Analysis : Soils. -V. 2. Fertili...
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Experiments with Sugar Beets in 1890-
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Bulletin, Issues 24-53
Bok av University of Idaho College of Agricult
Bulletin of the Maryland Agricultural Experiment Station, Issues 31-60
Bok av Maryland Agricultural Experiment Station
Farmers' Bulletin, Issues 851-875
Bok av United States Dept of Agriculture
Bulletin, Issues 90-124
Bok av Maryland Agricultural Experiment Station

Bulletin, Issues 94-99

Bok av Harvey Washington Wiley