Lloyd, Humphrey,  1800-1881 <br/><br/>
A treatise on magnetism :  general and terrestrial / 
by Humphrey Lloyd 
 - London :  Longmans, Green,  1874 
 - xv, 239 p., [1] leaves of plates ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnetism
<br/><br/><label>Dewey Class. No.: </label>538