Kraft, Leo. <br/><br/>
Gradus :  an integrated approach to harmony, 

 - New York :  W.W. Norton,  c1976. 
 - 2 v. :  ill. ;  28 cm. 
<br/><br/><label>LCCN: </label>75-040207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Harmony-- Sudies and exercises.
<br/><br/><label>Dewey Class. No.: </label>781.25