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  1. How crops grow; a century later /
    By: Day, Peter R., - Johnson, Samuel W. (Samuel William),
    Publication info: New Haven :Connecticut Agricultural Experiment Station,1969.
    Contributed by: University of Connecticut Libraries (archive.org)
    Subjects: (Samuel William),  1830-1909  Agricultural chemistry  Field crops  Growth (Plants)  Johnson, Samuel W  physiology  
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  2. How crops grow; a treatise on the chemical composition, structure and life of the plant, for students of agriculture, with numerous illustrations and tables of analyses.
    By: Johnson, Samuel William,
    Edition: Rev. and enl. ed.
    Publication info: New York,O. Judd,1894.
    Contributed by: University Library, University of Illinois Urbana Champaign
    Subjects: 1830-1909  Agricultural chemistry  Analysis  Growth (Plants)  Johnson, Samuel William,  Plant physiology  Plants  Portraits  
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