{"notes": {"type": "/type/text", "value": "Bibliogr.\n\n16"}, "title": "Principles of mineral dressing", "authors": [{"key": "/authors/OL2250832A"}], "publish_date": "1939", "publishers": ["McGraw-Hill"], "lc_classifications": ["TN'500'G25"], "publish_places": ["New York, NY"], "subjects": ["Ore-dressing"], "languages": [{"key": "/languages/eng"}], "pagination": "xi, 554 p. :", "lccn": ["40001088"], "edition_name": "1st ed.", "publish_country": "nyu", "by_statement": "by A. M. Gaudin.", "type": {"key": "/type/edition"}, "source_records": ["marc:marc_laurentian/openlibrary.mrc:481712212:786"], "key": "/books/OL21657774M", "number_of_pages": 554, "works": [{"key": "/works/OL7445063W"}], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2008-11-03T12:05:45.178692"}, "last_modified": {"type": "/type/datetime", "value": "2025-12-01T06:06:48.510169"}}