IRRIGATION

The Roosevelt project; the Imperial Valley project; irrigation of the region of San Diego. "One of the most important conquests of nature by man has been the increase of food production by irrigation. This film thru detailed illustrations gives an understanding of how the once barren desert land has been transformed into productive regions that add to our national wealth." A. W. Bork. "Not thorough. Not much about great dams." Collaborator. "Somewhat dated." A. W. Bork