An index of Gregorian chant /compiled by John R. Bryden and David G. Hughes. 

 - Cambridge :  Harvard University Press,  (c)1969. 
 - 2 volume ;  27 cm. 
<br/><br/>
<br/><br/>volume 1. Alphabetical index --  volume 2. Thematic index. 
<br/><br/>
<br/><br/><label>LC Class. No.: </label>ML102  / .I534 1969