Florey C du V. Leeder, S.R. <br/><br/>
Methods for cohort studies of chronic airflow limitation. 

 - 134 pages 
 - WHO Regional publications, European series ;  no. 12 .
<br/><br/><label>ISBN: </label>92890112033 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Respiratory tract diseases<br/>Data collection