Walker, D A <br/><br/>
Yearly seismic energy release: world totals versus ridge system totals.  [electronic resource] 

 -  Science (New York, N.Y.)  Sep 1976 
 - 886-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.193.4256.886  doi