James J.Schlesselman <br/><br/>
Case control studies: design,conduct,analysis 

 - OUP, New York  c1982 
 - xv,354p 
<br/><br/><label>ISBN: </label>0-19-502933-X 
<br/><br/><label>Dewey Class. No.: </label>614.40723 Sch