Berry, C M <br/><br/>
Safety and Preventive Medicine.  [electronic resource] 

 -  American journal of public health and the nation's health  Oct 1962 
 - 1750-1 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9572 
<br/><br/><label>Standard No.: </label>10.2105/ajph.52.10.1750  doi