Earth Sheltered HousingUnderground Space Center, University of Minnesota, Dept of Housing and Urban DevelopmentHäftad, 2005559 kr
Hot Water from the SunThe Franklin Research Center, Dept of Housing and Urban Development, U S Department of EnergyHäftad, 2005209 kr
Durability by DesignDept of Housing and Urban Development, Inc Nahb Research CenterHäftad, 2005269 kr
Survey of Passive Solar BuildingsDept of Housing and Urban Development, Us Department of Energy, Aia Research CorporationHäftad, 2005319 kr