Stevens, Orin Alva

ID:DA1698035X

別名

Stevens, Orin Alva

Stevens, O. A. (Orin Alva)

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  • The sow thistle

    O.A. Stevens

    Agricultural Experiment Station, North Dakota Agricultural College 1926 Circular / Agricultural Extension Division, North Dakota Agricultural College 32

    所蔵館1館

  • Making use of our birds

    O.A. Stevens

    Agricultural Experiment Station, North Dakota Agricultural College 1926 Bulletin / Agricultural Experiment Station, North Dakota Agricultural College 195

  • Alfalfa field registration

    [H.L. Bolley, O.A. Stevens]

    Agricultural Experiment Station, North Dakota Agricultural College 1926 Circular / Agricultural Extension Division, North Dakota Agricultural College 30

    所蔵館1館

  • Sweet clover seed studies

    O.A. Stevens and H.D. Long

    Agricultural Experiment Station, North Dakota Agricultural College 1926 Bulletin / Agricultural Experiment Station, North Dakota Agricultural College 197

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