. A history of the United States of America, its people, and its institutions. Colonial Steam-Plough. INDUSTRIAL CONDITIONS AND DEVELOPMENT. 529 convey it to market, great elevators store and load it onshipboard, and in a thousand ways the aid of invention hasbeen called in to decrease the labor and add to the produc- ^4J»

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1915