Campbell, Wallace H <br/><br/>
Introduction to geomagnetic fields 
Wallace H. Campbell 
 - 2nd ed 
 - Cambridge  Cambridge University Press  2003 
 - xii, 337 p. : ill., maps ; 26 cm 
<br/><br/> Includes bibliographical references (p. 322-331) and index 
<br/><br/><label>ISBN: </label>9780521822060 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomagnetism
<br/><br/><label>Dewey Class. No.: </label>538.7 CAM