268 ENGINEERING ON THE FARM 



Widtsoe, John A. Dry Farming. Macmillan. 



Widtsoe, John A. The Principles of Irrigation Practice. Macmillan. 



Wilson, Herbert M. Irrigation Engineering. John Wiley & Sons. 



GOVERNMENT PUBLICATIONS 



Irrigation Investigations, Bureau of Public Roads, United States 

 Department of Agriculture. 



