Zumchak, Joseph. <br/><br/>
Graciela Rivera  la diva puertorriqueña 
Joseph Zumchak. 
 - [S.l.  s.n.]  1990. 
 - 100 p.  chiefly ill. 
<br/><br/> Includes index.  Title from cover. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Rivera, Graciela 1921- . 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Singers--Biography.<br/>Sopranos Singers--Biography.--Puerto Rico