Kenneth J. Rothman <br/><br/>
Modern epidemiology 

 - 2 
 - philadelphia  Lippincott Williama & wilkins  1998 
 - 738 
<br/><br/><label>ISBN: </label>9780316757805 
<br/><br/><label>Dewey Class. No.: </label>614.4  / R O M