{"subject_places": ["Colombia"], "subjects": ["Centrifugal pumps", "Hydraulics", "Mines and mineral resources", "Placer mining", "Prospecting", "Hydraulic mining"], "key": "/works/OL7664921W", "title": "Minas de aluvio\u0301n", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL2359511A"}}], "type": {"key": "/type/work"}, "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2009-12-10T21:35:39.110741"}, "last_modified": {"type": "/type/datetime", "value": "2024-07-16T02:24:11.736557"}}