Ferstle, J <br/><br/>
Action arena.  [electronic resource] 

 -  The Physician and sportsmedicine  Apr 1978 
 - 129-33 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0091-3847 
<br/><br/><label>Standard No.: </label>10.1080/00913847.1978.11710707  doi