{"languages": [{"key": "/l/eng"}], "subtitle": "Oldoinyo Lengai and the Petrogenesis of Natrocarbonatites (I a V C E I Proceedings in Volcanology)", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 13:35:46.87638"}, "publishers": ["Springer"], "type": {"key": "/type/edition"}, "number_of_pages": 210, "isbn_13": ["9780387582993"], "isbn_10": ["0387582991"], "publish_date": "January 1995", "key": "/b/OL7447576M", "authors": [{"key": "/a/OL2682643A"}], "title": "Carbonatite Volcanism", "contributions": ["J. Keller (Editor)"], "id": 10141930, "revision": 1}