Marshall, Harold E  Ruegg, Rosalie T <br/><br/>
Simplified energy design economics: Principles of economics applied to energy conservation and solar energy investments in buildings 
by Harold E Marshall and Rosalie T Ruegg 
 - Washington D C  US Dept. of Commerce  1980 
 - iv, 50p 
<br/><br/><label>Dewey Class. No.: </label>333.94  / N80