Lloyd, Humphrey,  1800-1881 <br/><br/>
Elements of optics / 
by Humphrey Lloyd 
 - Dublin :  Hodges and Smith,  1849 
 - vi, 115 p. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optics
<br/><br/><label>Dewey Class. No.: </label>535