Barker, D. J. P. (David James Purslove)  <br/><br/>
Practical epidemiology  
D.J.P. Barker. 
 - 2nd. edition. 
 - Edinburgh:   Churchill Livingstone,   1976. 
 - 180 pages :    illustrations ;    19 cm. 
<br/><br/><label>ISBN: </label>0443019320 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology