Clay, Reginald S. <br/><br/>
Practical exercises in light :  being a laboratory course for schools of science and colleges / 
by Reginald S. Clay 
 - London :  Mcmillan,  1902 
 - xi, 187 p. :  ill. ;  17 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Light
<br/><br/><label>Dewey Class. No.: </label>535.1072