{"type": {"key": "/type/edition"}, "publish_date": "1793", "publish_country": "enk", "languages": [{"key": "/languages/eng"}], "title": "Hints from the manufacturers of the raw material of saltpetre into gunpowder, oil of vitriol, &c. &c", "authors": [{"key": "/authors/OL2615718A"}], "oclc_numbers": ["31742783"], "notes": {"type": "/type/text", "value": "Caption title.\n\nSigned and dated at end: Edmund Hill, Gunpowder Office, Savage Gardens, May 20, 1793."}, "subjects": ["Saltpeter", "Early works to 1800", "East India Company"], "publishers": ["publisher not identified"], "publish_places": ["London?]"], "pagination": "7, [1] p.", "source_records": ["marc:marc_columbia/Columbia-extract-20221130-002.mrc:113541278:1095"], "works": [{"key": "/works/OL38766610W"}], "key": "/books/OL52779162M", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2024-07-21T18:55:21.531489"}, "last_modified": {"type": "/type/datetime", "value": "2024-07-21T18:55:21.531489"}}