Hall, A. L.  1872-1955. <br/><br/>
A bibliography of South African geology for the years 1931 to 1935  (inclusive).  Author's index / 
by A. L. Hall. 
 - Pretoria :  Government printer,  1937. 
 - 168 p. ;  25 cm. 
 - Geological survey memoir ;  no. 30 .
 - Memoir (Geological Survey (South Africa)) ;  no. 30. .
<br/><br/> At head of title:  Union of South Africa.  Department of Mines.  Continuation of Memoirs 18, 22, 25 and 27. 
<br/><br/>With: The building stones of the Union of South Africa / by W. Wybergh. Pretoria : Government Printer, 1932.  Bound together subsequent to publication. 
<br/><br/><label>LCCN: </label>gs 37000129  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--South Africa--Bibliography.
<br/><br/><label>LC Class. No.: </label>QE324  / .A3 no. 30