Congreso  México a un siglo de Rerum Novarum (1891-1991). 

 - México, D.F.  Comisión Organizadora del Centenario de Rerum Novarum  [1991?] 
 - 493 p  28 cm. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Catholic Church. Pope 1878-1903. (Leo XIII) Rerum novarum --Congresses.<br/>Catholic church--Doctrines--Congresses.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Christian sociology--Catholic Church--Congresses.