Bogahawatte, V. T. L.  <br/><br/>
Building materials in Sri Lanka 

 - Colombo  Natural Resources, Energy &  Sciences Authority of Sri Lanka  1993 
 - 38p.  21cm 
 - Science education series No. 32 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building materials
<br/><br/><label>Dewey Class. No.: </label>691  / BOG