Hellmann, Ellen <br/><br/>
Rooiyard :  a sociological survey of an urban native slum yard / 
Ellen Hellmann 
 - Livingstone :  Oxford University Press,  1948. 
 - 125 p. :  ill. ;  25 cm. 
 - The Rhodes-Livingstone papers;  no.13 .
<br/><br/> Published for Rhodesia-Livingstone Institute 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Johannesburg--Social conditions<br/>Transvaal--Native races