Barrows. William E <br/><br/>
Light, Photometry, And Illuminating Engineering 

 - Third 
 -  MacGraw-Hill Book Company, Inc  1951 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photometry-Light-Illuminating Engineering
<br/><br/><label>Dewey Class. No.: </label>778.5