Roht, Lewis H. <br/><br/>
Principles of epidemiology : A self-teaching guide / 

 - New York:  Academic Press,  1982 
 - xi, 514 p.:  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0125931808 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology