Sidani, Souraya. <br/><br/>
Health intervention Research: understanding Research Design Methods 

 - Los Angeles  Sage  2015 
 - xiv,247p. 
<br/><br/><label>ISBN: </label>9781446256176 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research
<br/><br/><label>LC Class. No.: </label>MED R850  / S34