Burtis, Herbert <br/><br/>
Sing on! sing on! :  a guide to the life-long enjoyment of the voice for singers and teachers of vocal art / 
Herbert Burtis. 
 - Boston, MA :  E.C. Schirmer Music Company Inc.,  c1992. 
 - 87 p. : 21 cm. 
<br/><br/> (photocopies) 
<br/><br/><label>ISBN: </label>0911318178 
<br/><br/><label>LCCN: </label>Acc#32777,33032 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SINGING<br/>SINGING--METHODS<br/>SINGING--STUDIES AND EXERCISES
<br/><br/><label>LC Class. No.: </label>ML 3877  / B952 1992