Litwin, Mark S. <br/><br/>
How to measure survey reliability and validity 
Mark S.Litwin 
 - New Delhi:  Sage Publication,  1995. 
 -  87p. 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0803973888 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health surveys
<br/><br/><label>Dewey Class. No.: </label>300.723  / LIH