Human factors of productivity in Africa    A preliminary survey 

 - NA  NA         1956 
 - Inter-African Labour Institute .
<br/><br/><label>Standard No.: </label>136,062 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>X9:2u6:N5, J6(906)