{"subjects": ["Analytic Chemistry", "Qualitative", "Analytical chemistry"], "key": "/works/OL7633709W", "title": "A course of instruction and system procedure in the qualitativ[e] chemical analysis of inorganic substances", "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL2341861A"}}], "type": {"key": "/type/work"}, "covers": [5827901], "latest_revision": 5, "revision": 5, "created": {"type": "/type/datetime", "value": "2009-12-10T21:31:26.396122"}, "last_modified": {"type": "/type/datetime", "value": "2026-06-23T00:37:31.960029"}}