Duckworth, William. <br/><br/>
Theoretical foundations of music / 
William Duckworth, Edward Brown. 
 - Belmont, Calif. :  Wadsworth Pub. Co.,  c1978. 
 - xii, 355 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0534005268 
<br/><br/><label>LCCN: </label>77007571 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Music theory.
<br/><br/><label>LC Class. No.: </label>MT 6 .D8333  / T5