Wellesz, Egon,  1885- <br/><br/>
The origins of Schonberg's twelve-tone system :  a lecture deliver ed in the Whittall Pavilion of the Library of Congress, January 10, 195 7 / 
Egon Wellesz 
 - Washington :  U.S. Government Printing Office,  1958. 
 - iii, 14 p. :  ill. ;  24 cm. 
 - Louis Charle Elson memorial lecture ; .
<br/><br/> At head title: The library of Congress. The Louis Charles Elson Memo rial Fund. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Schonberg, Arnold, 1874-1951. <br/>Twelve-one system.<br/>Music--Addresses, essays, lectures.
<br/><br/><label>Dewey Class. No.: </label>781.22