Thomas, P O <br/><br/>
Social mammals: behavioral biology of killer whales.  [electronic resource] 

 -  Science (New York, N.Y.)  Jul 1987 
 - 204 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.237.4811.204  doi