Title
1972 OBERS projections : economic activity in the U.S. by economic area, water resources region and subarea, State, and SMSA and non-SMSA portions of the areas, historical and projected--1929-2020 / prepared by the U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of Economic Analysis, Regional Economic Analysis Division and the U.S. Dept. of Agriculture, Economic Research Service, Natural Resources Economics Division for the U.S. Water Resources Council