{"type": {"key": "/type/edition"}, "publish_date": "1928", "publish_country": "dcu", "languages": [{"key": "/languages/eng"}], "title": "Motu proprio of Pope Pius X", "subtitle": "and other papal documents on liturgical music, including Pope Pius X's letter to the cardinal vicar of Rome, regulations for the province of Rome, and the pastoral letter on music of Archbishop Blenk of New Orleans", "authors": [{"key": "/authors/OL7224100A"}], "oclc_numbers": ["3377233"], "notes": {"type": "/type/text", "value": "Cover title."}, "contributions": ["Blenk, James Hubert, 1856-1917"], "subjects": ["Church music", "Catholic Church", "Gregorian chants", "History and criticism"], "publishers": ["Catholic Education Press"], "publish_places": ["Washington, D.C.]"], "pagination": "64 pages", "number_of_pages": 64, "source_records": ["marc:marc_columbia/Columbia-extract-20221130-010.mrc:233730942:1161", "marc:harvard_bibliographic_metadata/ab.bib.09.20150123.full.mrc:909115316:1140", "marc:harvard_bibliographic_metadata/20220215_001.bib.mrc:301199530:1842"], "works": [{"key": "/works/OL38993663W"}], "key": "/books/OL53095653M", "lc_classifications": ["ML3095 1903 .M66"], "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2024-08-10T12:46:18.748848"}, "last_modified": {"type": "/type/datetime", "value": "2025-04-21T20:56:00.349200"}}