Improving the efficiency of your gas heating system.

Bibliographic Details
Corporate Author:	United States. Department of Energy. Office of Building Technologies
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Dept. of Energy, Assistant Secretary of Conservation and Renewable Energy, Office of Building Technologies, [1991]
Subjects:	Heating > Equipment and supplies. Gas-burners. Furnaces > Efficiency.

Evans: US Documents (Annex 5th floor)