Silberstein, Ludwik,  1872- <br/><br/>
Simplified method of tracing rays through any optical system of lenses, prisms, and mirrors / 
by Ludwik Silberstein. 
 - London ;  New York :  Longmans, Green and Co.,  1918. 
 - ix, 37 p. :  ill. ;  22 cm. 
<br/><br/><label>LCCN: </label>sg 19000079  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometrical optics.<br/>Refraction.
<br/><br/><label>LC Class. No.: </label>QC383  / .S5