OPEN University of Sri Lanka <br/><br/>
Physics: waves and vibrations book -1 

 - 2nd ed. 
 - Nugegoda  The Open University of Sri Lanka  1995 
 - 185 p. 
<br/><br/><label>ISBN: </label>139494 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Waves
<br/><br/><label>Dewey Class. No.: </label>531.32  / OPE