Lewin, Julius. <br/><br/>
The colour bar in the copper belt. 

 - Johannesburg :  Pub. for the Southern African Committee on Industrial Relations by the South African Institute of Race Relations,  1941. 
<br/><br/> Publ. for the Southern African Committee on Industrial Relations. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copper miners -- Zambia.--Copper miners -- Zambia.