{"subjects": ["Dies (Metal-working)", "Problems, exercises", "Punching machinery", "Dies (metal-working)"], "key": "/works/OL5268853W", "title": "Die design fundamentals", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1192020A"}}], "type": {"key": "/type/work"}, "covers": [634338], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-10T09:17:56.590227"}, "last_modified": {"type": "/type/datetime", "value": "2022-08-17T15:46:43.773325"}}