Raamatud George Hopkins
Ralphs Possession: A Simple Record Of How It Was Given Him And What He Did With It (1873)
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Veterinary Elements: A Manual For Agricultural Students And Stockmen (1901)
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For Better Crops (1911)
Willet Martin Hays, Cyril George Hopkins, Perry Greeley Holden
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The Farm That Won't Wear Out
Cyril G. (Cyril George) Hopkins
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The Story of the Soil from the Basis of Absolute Science and Real Life,
Cyril G. (Cyril George) Hopkins
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The Story of the Soil from the Basis of Absolute Science and Real Life,
Cyril G. (Cyril George) Hopkins
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Ralphs Possession: A simple record of how it was given him and what he did with it
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University of Illinois Agricultural Experiment Station Bulletin No. 94
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University of Illinois Agricultural Experiment Station Bulletin No. 94: Nitrogen Bacteria and Legumes; With special reference to red clover, cowpeas, soy beans, alfalfa, and sweet clover, on Illinois soils
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U-N-I-Verse: Volume 1
Shavar L. Thompson, George Hopkins, Imhotep Shabazz
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Summary of Illinois Soil Investigations
Frederick Charles Bauer, Cyril George Hopkins, Jeremiah George Mosier
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Summary of Illinois Soil Investigations
Frederick Charles Bauer, Cyril George Hopkins, Jeremiah George Mosier
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The Story of the Soil
Cyril G (Cyril George) Hopkins
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The Story of the Soil
Cyril G (Cyril George) Hopkins
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Nitrogen Bacteria and Legumes
Cyril G (Cyril George) Hopkins
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The Farm That Won't Wear Out
Cyril G (Cyril George) Hopkins
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Soil Fertility Laboratory Manual
James Harvey Pettit, Cyril George Hopkins
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Soil Fertility Laboratory Manual
James Harvey Pettit, Cyril George Hopkins
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On Time With Time The Memoirs of George Hopkins
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Ralph's Possession: A Simple Record Of How It Was Given Him And What He Did With It (1873)
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Veterinary Elements: A Manual For Agricultural Students And Stockmen (1901)
-40% koodiga BOOKS
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For Better Crops (1911)
Cyril George Hopkins, Willet Martin Hays, Perry Greeley Holden
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Soil fertility laboratory manual
Cyril George Hopkins, James Harvey Pettit
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