Knopf, Karl <br/><br/>
AB Wheel  Workouts  
50 Exercises to Stretch and Strengthen Your  Abs, Core, Arms, Back and Legs 
 - Berkeley, CA 94703   Karl Knopf.   2013 
 - 95 Pages  
<br/><br/><label>ISBN: </label>978-1-61243-233-5 
<br/><br/><label>Subjects--Facted Index Terms: </label>--Sports Medicine