{"notes": {"type": "/type/text", "value": "\"Suggested for grades K-4\""}, "title": "Light and shadows", "subtitle": "an illustrated teacher's guide for use in the primary grades.", "authors": [{"key": "/authors/OL4953293A"}], "publish_date": "1968", "publishers": ["Webster Division, McGraw-Hill"], "publish_places": ["St. Louis"], "pagination": "[28] p.", "languages": [{"key": "/languages/eng"}], "subjects": ["Geometrical optics."], "publish_country": "mou", "type": {"key": "/type/edition"}, "source_records": ["marc:marc_university_of_toronto/uoft.marc:1899056010:685"], "key": "/books/OL18436369M", "number_of_pages": 28, "works": [{"key": "/works/OL11692104W"}], "latest_revision": 3, "revision": 3, "created": {"type": "/type/datetime", "value": "2008-10-16T18:58:51.086072"}, "last_modified": {"type": "/type/datetime", "value": "2026-01-20T21:43:16.272627"}}