Analog simulation of the ground-water system, Yuma, Arizona, in Water resources of Lower Colorado River-Salton Sea area

Patten, E.P., Jr., 1977, Analog simulation of the ground-water system, Yuma, Arizona, in Water resources of Lower Colorado River-Salton Sea area: U.S. Geological Survey Professional Paper 486-I, p. I1-I10, 1 sheet, scale 1:350,000.