Riet, Joyce van der. <br/><br/>
More rock-paintings in South Africa from the coastal belt between Albany and Piquetberg / 
mainly copied by Joyce and Mollie van der Riet ; with notes by the same and an introduction and explanatory remarks by Dorothea F. Bleek. 
 - London :  Methuen & Co,  1940. 
 - xx p., 27 l :  28 pl. (part col.) map ;  33 cm. 
<br/><br/> Bibliographical foot-notes.