Diatomaceous deposits in the Union of South Africa with special reference to Kieselguhr. 

 - Pretoria, Union of South Africa :  Government Printer,  1947. 
<br/><br/>Includes bibliographical references. 
<br/><br/>pt. 1. Geology and economic aspects -- pt. 2. The diatom flora. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diatomaceous earth.