Robertshaw, S A <br/><br/>
Submaximal alternatives to the Harvard pack index as guides to maximal oxygen uptake (physical fitness).  [electronic resource] 

 -  Ergonomics  Feb 1984 
 - 177-85 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0014-0139 
<br/><br/><label>Standard No.: </label>10.1080/00140138408963475  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal Mining<br/>Emergency Medical Technicians<br/>Exercise Test<br/>Humans<br/>Oxygen Consumption<br/>Physical Fitness