Boslaugh, Sarah <br/><br/>
Secondary data sources for public health: A practical guide 

 - Cambridge  Cambridge University Press  2007 
 - xi; 152p. 
 - Practical Guide to Biostatistics and Epidemiology .
<br/><br/><label>ISBN: </label>9780521690232 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public health - Research