Wollin, G <br/><br/>
Variations in magnetic intensity and climatic changes.  [electronic resource] 

 -  Nature  Aug 1971 
 - 549-51 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0028-0836 
<br/><br/><label>Standard No.: </label>10.1038/232549a0  doi