Derr, Thomas Sieger. <br/><br/>
Barrier to Ecumenism :  The Holy see and the World Council of Churches on Social Questions / 

 - Maryknoll, New york :  Orbis Books,  1983. 
 - [ix], 102 p. 
<br/><br/><label>ISBN: </label>0883440318 
<br/><br/><label>Dewey Class. No.: </label>280.1  / DER