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2013. Institute for Water Resources (U.S.). Navigation Data Center. This point shapefile contains the locations of waterways locks in the United States. The Navigation Data Center had several objectives in developin... United States. Bureau of Transportation Statistics.
2009. Massachusetts Coastal Zone Management Office. The ocean management plan establishes three categories of management areas: Prohibited, Renewable Energy, and Multi-Use. Renewable Energy Areas all... United States. National Oceanic and Atmospheric Administration.
2011. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts the general boundaries of the major wind farms in the nine county San Francisco Bay Area Region, California as of 20... Bay Area Open Space Council.
1931. Virtual Shanghai Project and Jihyun Geographical Institute. This layer is a georeferenced image of a map of Shanghai (originally titled '新上海地圖 /Xin shanghai ditu') that was published in 1931. It shows histor... Virtual Shanghai Project.