Singulari Quadam
On Labor Organizations
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Original text published before 1931: public domain in the US. Modern English translations (e.g. vatican.va's) may still be under copyright.
Cite this page
This catalogue
Singulari Quadam (1912). On Labor Organizations. docs.church. https://docs.church/singulari-quadam
Official citation
Pius X, Singulari Quadam (24 September 1912). https://www.papalencyclicals.net/pius10/p10lab.htm