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Publicado por National Aeronautics and Space Administration, Washington, D.C., 1976
Librería: Clausen Books, RMABA, Colorado Springs, CO, Estados Unidos de America
Wraps. Condición: Good. Black and White Photos, Drawings, Charts and Diagrams Ilustrador. Binding faded and lightly edge-rubbed; textblock clean; 56 pp. Size: Quarto. Paperback.
Publicado por Washington, DC: NASA, July 1976., 1976
Librería: OLD WORKING BOOKS & Bindery (Est. 1994), West Brookfield, MA, Estados Unidos de America
Miembro de asociación: SNEAB
Original o primera edición
Illustrated by b&w photographs, line drawings and charts. First edition. Langley Research Center. Blue stapled wraps. Large Post 4to (27cm). pp. 56. Appendices, References. Near Fine. Edge sunned top cover and short repaired rear tear, internally fine, no ownership or marking. Three part report: 1. Background of Solar Heating 2. System built at Langley designed to supply 40% heating for 1500sq.ft. home. "Experience indicates that is more cost effective at this time to supply approximately one-half of the heating load than to attempt to use solar energy to meet the full home heating demands." (cost at the time was $2000) 3. Information for the homeowner for construction (designed for use with existing in forced hot water system).