1. Oregon Office of Energy Research and Planning, Energy Study: 150 (1974).
2. Input-Output Structure of the U.S. Economy: 1963 1969
3. Energy Research and Development Administration, National Plan for Energy Research, Development, and Demonstration: Creating Energy Choices for the Future: X-3 (1975).
4. U.S. Federal Energy Administration, Project Independence Blueprint-Geothermal Energy: E1 (1974).
5. 1967 Census of Manufacturers 1971