Chapman, Sydney,  1888-1970. <br/><br/>
The earth's magnetism / 
Sydney Chapman,  
 - 2nd ed. rev. and reset 
 - London :  Methuen & co. ltd. ,  1936,1951 
 - 127 p. ;  16 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnetic
<br/><br/><label>Dewey Class. No.: </label>538.7  / CHE 1951