Apostolic letter of His Holiness Pope Paul VI to Cardinal Maurice Roy
Subtitle: on the occasion of the eightieth anniversary of the encyclical Rerum novarum, May 14, 1971
By: commentary by George G. Higgins.
Contributors: Paul VI, Pope, 1897-1978.; Higgins, George G., 1916-
Publisher: United States Catholic Conference
Published: 1971
Place of publication: Washington, D. C
Language: eng
Number of pages: 40
Subjects: Catholic Church. -- Pope (1878-1903 : Leo XIII).; Church and social problems -- Catholic Church -- Papal documents.
Other titles: A call to action.
Work titles: Octogesima adveniens.
Notes: Cover title: A call to action.

Includes bibliographical references.