by Alva H. Benton[Agricultural Experiment Station, North Dakota Agricultural College][1931]
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L.M. Roderick and A.F. SchalkAgricultural Experiment Station, North Dakota Agricultural College1927
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Alva H. Benton and M.F. PeightalAgricultural Experiment Station, North Dakota Agricultural College1927
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[P.J. Olson, H.L. Walster and T.H. Hopper]Agricultural Experiment Station, North Dakota Agricultural College1927
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[T.E. Stoa, R.W. Smith, C.E. Mangels]Agricultural Experiment Station, North Dakota Agricultural College1927
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C.E. Mangels, T.E. Stoa and Wm. GuyAgricultural Experiment Station, North Dakota Agricultural College1927
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H.L. BolleyAgricultural Experiment Station, North Dakota Agricultural College1926
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[T.E. Stoa]Agricultural Experiment Station, North Dakota Agricultural College1926
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[by H.L. Bolley, W.G. Couey]Agricultural Experiment Station, North Dakota Agricultural College1926
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R.S. AmadonAgricultural Experiment Station, North Dakota Agricultural College1926
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O.A. StevensAgricultural Experiment Station, North Dakota Agricultural College1926
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by A.F. SchalkAgricultural Experiment Station, North Dakota Agricultural College1926
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O.A. Stevens and H.D. LongAgricultural Experiment Station, North Dakota Agricultural College1926
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O.A. StevensAgricultural Experiment Station, North Dakota Agricultural College1926
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by H.L. WalsterAgricultural Experiment Station, North Dakota Agricultural College1926
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[H.L. Bolley, O.A. Stevens]Agricultural Experiment Station, North Dakota Agricultural College1926
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P.F. TrowbridgeAgricultural Experiment Station, North Dakota Agricultural College1926
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T.E. StoaAgricultural Experiment Station, North Dakota Agricultural College1925
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Theodore StoaAgricultural Experiment Station, North Dakota Agricultural College1925
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T.H. HopperAgricultural Experiment Station, North Dakota Agricultural College1925
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