Lempert, Barry L Henderson, T. L <br/><br/>
Occupational  Noise And Hearing 1968-1972 

 -  National Institute for Occupational Safety and Health  1973 
 - 51 p.  tabls., grafs. 
<br/><br/>Noise survey Hearing survey procedures: Equipment and calibration; hearing test procedure Exclusion of data from the screened sample Extent of study. Hearing levels of non-noise exposed parsons ONHS composite analysis: Hearing level statistics Composite ONHS analysis: Hearing impairment 
<br/><br/><br/>Inglés 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RUIDO/control y prevención