{"languages": [{"key": "/l/eng"}], "subtitle": "Proceedings of the international workshop, Bilthoven, December 12-16, 1977 (Studies in environmental science)", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 13:35:46.87638"}, "publishers": ["Distributors for the U.S. and Canada, Elsevier/North-Holland"], "number_of_pages": 168, "isbn_13": ["9780444417640"], "isbn_10": ["0444417648"], "publish_date": "1978", "key": "/b/OL7530022M", "title": "Air pollution reference measurement methods and systems", "type": {"key": "/type/edition"}, "id": 10248707, "revision": 1}