Hansen, Peter S. <br/><br/>
An introduction to twentieth century music / 
by Peter S. Hansen. 
 - 2nd ed. 
 - Boston :  Allyn and Bacon,  1967. 
 - x, 420 p. :  music, ports. ;  23 cm. 
<br/><br/>'Selected readings' at end of each chapter. Bibliographical footnotes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Music--20th century--History and criticism.<br/>Music appreciation.