Tjr̜hom, Ola.
Visible church, visible unity: ecumenical ecclesiology and "the great tradition of the church" /
Ola Tjr̜hom ; foreword by Geoffrey Wainwright 
. - Collegeville : Liturgical Press,  2004 
. - xviii, 118 p.  23 cm. 
 - Unitas books .
<br/><label>  ISBN: </label>0-8146-2873-7