Cotten, D J <br/><br/>
A modified step test for group cardiovascular testing.  [electronic resource] 

 -  Research quarterly  Mar 1971 
 - 91-5 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0034-5377 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Heart Function Tests<br/>Humans<br/>Male<br/>Physical Fitness