Gunasinghe, R. M. <br/><br/>
Physics  geometrical optics   block 1 

 - Nugegoda  The open university of Sri Lanka  1986 
 - [v],117p.  28cm 
 - Foundation science leading to bachelor of science degree programme .
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHYSICS
<br/><br/><label>Dewey Class. No.: </label>530  / PHY