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Principles of Irrigation Practice by John A. Widtsoe, 1914. From the Rural text-book series.
Correspondence of John A. Widtsoe, between 1912 and 1914, regarding his publications.
Irrigation investigations: factors influencing evaporation and transpiration, a Utah Agricultura Experiment Station Bulletin, no. 105, dated August 1909, written by John A. Widtsoe
Chemical composition of crops as affected by different quantities of irrigation water - a Utah Agricultural Experiment Station Bulletin, no. 120, dated 1912, written by John A. Widtsoe.