{"first_sentence": {"type": "/type/text", "value": "By the 1930s, the Izaak Walton League and other conservation groups alarmed by declining waterfowl populations called for the replacement of the 84 million acres of wetland habitat lost by drainage in the United States (Page et al., 1938)."}, "physical_format": "Paperback", "subtitle": "An Ecological Approach", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "weight": "13.4 ounces", "languages": [{"key": "/l/eng"}], "publishers": ["Iowa State Press"], "number_of_pages": 344, "isbn_13": ["9780813824970"], "id": 12802926, "edition_name": "New Ed edition", "isbn_10": ["0813824974"], "publish_date": "June 30, 1998", "key": "/b/OL9508136M", "authors": [{"key": "/a/OL717283A"}, {"key": "/a/OL3274693A"}], "title": "Restoring Prairie Wetlands", "type": {"key": "/type/edition"}, "subjects": ["Conservation of the environment", "Management of land & natural resources", "Nature", "Nature/Ecology", "USA", "Environmental Conservation & Protection - General", "Life Sciences - Ecology - Ecosystems"], "physical_dimensions": "8.8 x 5.9 x 0.8 inches", "revision": 1}