Andersen K L ... [et al.]. <br/><br/>
Habitual physical activity and health. 

 - 188p. 
 - (WHO Regional publications, European series ; no. 6). .
<br/><br/><label>ISBN: </label>92-9020-106-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical fitness<br/>Exertion