Chapman, Sydney, <br/><br/>
The earth's magnetism, 

 - London,  Methuen & co. ltd.  [1936] 
 - xi,127p. 
<br/><br/><label>Subjects--Index Terms: </label>Magnetism, Terrestrial.   Geomagentism 
<br/><br/><label>Dewey Class. No.: </label>538.7  / CHA