[Recommendations on permissible exposure levels (1990)].  [electronic resource] 

 -  Sangyo igaku. Japanese journal of industrial health  Sep 1990 
 - 381-423 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0047-1879 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Maximum Allowable Concentration<br/>Occupational Health