Proctor, Charles. <br/><br/>
Harmonization at the keyboard. 

 - London :  H. Jenkins,  [1961] 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>61066256 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Keyboard harmony.
<br/><br/><label>LC Class. No.: </label>MT224.P935  / H4