Test methods and standards development for active solar heating and cooling systems [microform] / Heinz R. Trechsel, Belinda L. Collins ; prepared for U.S. Department of Energy, Office of Solar Heat Technologies, Active Heating and Cooling Division
Washington, DC : U.S. Dept. of Commerce, National Bureau of Standards ; [Springfield, VA.] : [Order from National Technical Information Service (NTIS)], [1984]