Bird, Richard E. <br/><br/>
A simplified clear sky model for direct and diffuse insolation on horizontal serface/ 
by Richard E. Bird and Roland L. Huistrom 
 - Washington, D.C. :  United States Department of Energy,  1981 
 - Various pagings :  ill. ;  cm. 
<br/><br/> Cover title 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Solar radiation--Congresses<br/>Sunshine
<br/><br/><label>Dewey Class. No.: </label>551.5271