Loken, Newton C. <br/><br/>
Tumbling and trampolining :  two books in one, including summary of trampolining rules / 
by Newton C. Loken. 
 - Combined ed. 
 - Sterling Pub. Co. :  New York,  1970. 
 - 128 p. :  illus. ;  21 cm. 
<br/><br/> 'Revised and enlarged edition.' 
<br/><br/><label>ISBN: </label>080694336X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tumbling.