Pitchford A <br/><br/>
Studies in geometircal optics 

 -  1959 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>39359 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Physics<br/>Radiation in mathematics
<br/><br/><label>Dewey Class. No.: </label>C5:B6, J9