Public health research methods 
[edited by] Greg Guest Emily E. Namey. 
 - New Delhi  Sage  2015 
 - xlii, 785p; 23cm. 
<br/><br/><label>ISBN: </label>9781452241333 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public health - methods Research design. 
<br/><br/><label>Dewey Class. No.: </label>362.1  / P92P