Norell, Staffan E. <br/><br/>
A Short course in epidemiology 

 - viii, 192 pages ;  23cm 
<br/><br/> Acc. No. 11409 
<br/><br/><label>ISBN: </label>0881678422 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Case-control studies<br/>Cohort studies<br/>Research design