Article — From the March 1913 issue
The conservation of the fertility of soil
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Article — From the March 1913 issue
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More from A.D. Hall:
Article — From the July 1911 issue
Article — From the October 1910 issue
© 2017 Harper’s Magazine Foundation. Cover: Illustration by John Ritter. Source photographs (details): © Kevork Djansezian/AP Photo; © Wally Santana/AP Photo
