Seliger, V <br/><br/>
The habitual activity and physical fitness of 12 year old boys.  [electronic resource] 

 -  Acta paediatrica Belgica  1974 
 - 54-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0001-6535 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Activities of Daily Living<br/>Age Factors<br/>Child<br/>Czechoslovakia<br/>Habituation, Psychophysiologic<br/>Humans<br/>Male<br/>Physical Fitness<br/>School Health Services