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  1. Intensive farming and use of dynamite,
    By: Pennsylvania railroad company.
    Publication info: Baltimore, Md.,Printed by the Lord Baltimore press,c1911
    Contributed by: Library of Congress
    BHL Collections: Library of Congress
    View Book
  2. Intensive farming and use of dynamite,
    By: Pennsylvania railroad company.
    Publication info: [Philadelphia, Pa.]The Pennsylvania railroad,1911.
    Contributed by: Library of Congress
    BHL Collections: Library of Congress
    View Book