Robertson, 1943-  <br/><br/>
Perceived exertion for practitioners : rating effort with the OMNI picture system  
/ Robert J. Robertson. 
 - Champaign  Human Kinetics  2004. 
 - xi, 170p.  ill.  23cm 
<br/><br/> Includes index p.165 - 170 
<br/><br/><label>ISBN: </label>0736048375  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Exercise--Measurement<br/>Exercise--Psychological aspects<br/>Perception<br/>Physical fitness<br/>Rehabilitation--methods
<br/><br/><label>Dewey Class. No.: </label>612.044 ROB 2004