Keitz, H. A. E. <br/><br/>
Light calculations and measurements;  an introduction to the system of quantities and units in light-technology and to photometry 
[by] H. A. E. Keitz. 
 - 2d rev. ed. 
 - London  Macmillan  [1971] 
 - xiii, 430 p.  illus.  24 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Photometry 
<br/><br/><label>Dewey Class. No.: </label>535/.2  / KEI