Unabridged model life tables correspondng to the new united nations model life tables for developing countries 
/ United Nations, Départment of international economic and social affiars 
. - New york  : United Nations, 1982
. - 420 p.  ; 28 cm. 
<br/><br/><label>Source: </label> Don 
<br/><br/><label>Universal Decimal Class. No.: </label>312.9