Public health research methods 

 - Los Angeles  Sage  2015 
 - xlii,785.  ill. 
<br/><br/><label>ISBN: </label>9781452241333 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public health<br/>Research design<br/>Epidemiologic methods
<br/><br/><label>LC Class. No.: </label>MED RA 425  / .P55