Keitz, H. A. E. <br/><br/>
Light calculations and measurements :  an introduction to the syst em of quantities and units in light-technology and to photometry / 
H . A. E. Keitz ; With a foreword by J. G. Holmes ; English translation b y G. Ducloux. 
 - Eindhoven :  Philips Technical Library ,   1955. 
 - 413 p. :  ill. ;   24 cm. 
 - Philips technical library Series "Light and lighting,"   7 .
<br/><br/><label>LCCN: </label>56-058140 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photometry.
<br/><br/><label>Dewey Class. No.: </label>535.2