Ortiz de Urbina, Ignacio <br/><br/>
Nicee et Constantinople. 

 - Paris  L'Orante  1962. 
 - 312 p. 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Catholic Church--History.
<br/><br/><label>Subjects--Meeting Names: </label><br/>Councils and synods.