Title: Encyclical letter (Rerum Novarum) of His Holiness Leo XIII by Divine Providence, Pope to his venerable brethren, all Patriarchs, Primates, Archbishops, and Bishops of the Catholic world, in grace and communion with the Apostolic See on The condition of the working classes
First published: 1960
Subjects: Catholic authors, Christian sociology, Labor and laboring classes, Sociology, Christian