Handbook of vital statistics systems and methods. 

 - New York  United Nations          1991 
 - ix,87p.  cm. 
 -  Vol. 1 .
<br/><br/> Statistics in methods series F, no. 52 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,93:3.N91, N1/UN