Industrial clays of Sri Lanka  Geology, mineralogy and appraisal for ceramics and other industries 

 - Colombo  Geological Survey Department  [-] 
 - xii, [1],113p.  Illustration  24.5cm x 18.5cm 
 - Economic Bulletin no.1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clay - Sri Lanka<br/>Industrial mineral - Sri Lanka 
<br/><br/><label>Dewey Class. No.: </label>553.61095493  / GSD