Narayanapanikkar, Kavalam <br/><br/>
Sopanatatvam (സോപാനതത്വം) / 
by Kavalam Narayanapanikkar 
 - Kozhikode:  Haritham Books,  2008 
 - p.258 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arts<br/>Performing Arts<br/>Sopana Music
<br/><br/><label>Dewey Class. No.: </label>790.2095483  / NAR-S