Raamatud George Stronach
Relation Of Soil Nitrogen, Nitrification And Ammonification To Pot Experiments
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Relation Of Soil Nitrogen, Nitrification And Ammonification To Pot Experiments
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The Composition of the Soils of the Texas Panhandle
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Availability Of Some Nitrogenous And Phosphatic Materials
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The Composition And Value Of Wheat By-products...
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Digestibility Of Sugar, Starches, And Pentosans Of Roughages...
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Commercial Fertilizers And Poisonous Insecticides In 1907-8...
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The Composition Of The Soils Of Archer, Franklin And Harrision Counties...
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The Relation Of The Phosphoric Acid Of The Soil To Pot Experiments...
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