"Lwanga, S.K." <br/><br/>
Sample size determination in health studies : a practical manual 

 - Geneva  WHO  1991 
 - 80 p. 
<br/><br/><label>ISBN: </label>9241544058 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health
<br/><br/><label>Dewey Class. No.: </label>362.102 LWA