- Comparative efficiency of energy use in crop production (Bulletin / Connecticut Agricultural Experiment Station) by G. H Heichel, 1973
- Megatrends for Energy Efficiency and Renewable Energy by Michael Frank Hordeski, 2010-09-03
- Using Consensus Building to Improve Utility Regulation (Aceee Books on Energy Policy and Energy Efficiency) by Jonathan Raab, 1994-08
- Energy Efficiency and Fuel Substitution in the Cement Industry (Industry and finance series) by Mogens H. Fog, 1984-10
- Improving Energy Efficiency in Apartment Buildings (Aceee Books on Energy Policy and Energy Efficiency) by Rick Diamond, Sandra L. Nolden, et all 1996-05
- Energy Efficiency in Industry by Norman L. Dean, 1981-01
- GIS Applications in Agriculture, Volume Two: NutrientManagement for Energy Efficiency
- The Economics Of Technology Diffusion And Energy Efficiency (Advances in Ecological Economics Series) by Peter Mulder, 2005-03-30
- Energy Efficiency Manual by Donald Wulfinghoff, 1980
- Supplying Energy Through Greater Efficiency: The Potential for Conservation in California's Residential Sector by Alan Meier, Janice Wright, et all 1983-12
- Energy Use and Energy Efficiency in U.K.Transport Up to the Year 2010 (Energy efficiency series) by Dept.of Energy, 1990-01
- Energy Efficiency in Buildings (House of Commons Papers) by Environment Committee, 1993-12
- Energy Efficiency, Recovery and Storage
- Energy Efficiency in Low Income Households: Evaluation of Local Insulation Projects (Energy efficiency series) by Dept.of Energy, 1985-10
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