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  1. 1
    L'era del guano
    by Gerbi, Antonello, 1904-1976
    Published 1961

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  2. 2
    Isotopic studies of Azolla and nitrogen fertilization of rice /
    Published 1993

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  3. 3
    Six chemicals that changed agriculture /
    by Zimdahl, Robert L.
    Published 2015

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  4. 4
    The alchemy of air : a Jewish genius, a doomed tycoon, and the scientific discovery that fed the world but fueled the rise of Hitler /
    by Hager, Thomas
    Published 2008

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  5. 5
    Nitrogen nutrition of cotton : practical issues : proceedings of First Annual Workshop for Practicing Agronomists : February 7, 1990, Hilton Riverfront Inn, North Little Rock, AR /
    Published 1990

    Conference Proceeding Book
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  6. 6
    Agriculture and the Nitrogen Cycle : Assessing the Impacts of Fertilizer Use on Food Production and the Environment
    by Mosier, Arvin
    Published 2004

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  7. 7
    Nitrogen-15 in soil-plant studies; proceedings
    Published 1971

    Conference Proceeding Book
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  8. 8
    Hose pump for applying nitrogen solutions /

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    Government Document Book
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  9. 9
    Nitrate, agriculture, and the environment /
    by Addiscott, T. M (Tom M.)
    Published 2005

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  10. 10
    Agriculture and the nitrogen cycle : assessing the impacts of fertilizer use on food production and the environment /
    Published 2004

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