Derryberry, M <br/><br/>
Public Health Education Section: Public Health Education Planning.  [electronic resource] 

 -  American journal of public health and the nation's health  May 1949 
 - 137-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9572 
<br/><br/><label>Standard No.: </label>10.2105/ajph.39.5_pt_2.137  doi