van Loon, J H <br/><br/>
[Mechanization and energy expended by man in silviculture].  [electronic resource] 

 -  Concours medical  Jul 1965 
 - 4793-5 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0010-5309 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Occupations<br/>Physical Exertion<br/>Work