Research in human capital and development  a research annual 
 A research manual 
editor : Ismail Sirageldin  
 - Greenwich, Connecticut  Jai Press  1979-  
 - 3v.  ill.  24 cm. 
<br/><br/><label>ISBN: </label>0892320192 (volume 1) 0892320982 (volume 2) 0892321296 (supplement 1) 0892321660 (volume 3) 
<br/><br/><label>LC Class. No.: </label>HD4904.7