@misc{official+proceedings+of+the+nineteenth+national+irrigation+congress+held+at+chicago+illinois+u+s+a+december+5+9+1911, title = {Official Proceedings of the Nineteenth National Irrigation Congress : held at Chicago, Illinois, U. S. A., December 5-9, 1911}, address = {Chicago}, publisher = {R. R. Donnelley & Sons Company}, date = {1912} }