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  1. Field experiments in spraying apple orchards / by B.S. Pickett ... [et al.].
    By: Pickett, B. S.
    Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1916.
    Contributed by: University of Illinois Urbana Champaign
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  2. Field experiments in spraying apple orchards in 1913 and 1914 / by B.S. Pickett ... [et al.].
    By: Pickett, B. S.
    Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1918.
    Contributed by: University of Illinois Urbana Champaign
    View Book