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  • U.S. Department of State

    U.S. Department of State

    U.S. Department of State Department Of State. The Office of Electronic Information, Bureau of Public Affairs

    - 2014-02-04 - 收藏
  • Department of Energy美国能源部

    Department of Energy美国能源部

    Department of Energy www.energy.gov美国能源部

    - 2014-02-04 - 收藏
  • Welcome to the USGS - U.S. Geological Survey

    Welcome to the USGS - U.S. Geological Survey

    Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment.

    - 2014-02-04 - 收藏
  • Exploratorium

    Exploratorium

    San Francisco's Exploratorium is more than a museum, it's a twenty-first-century learning laboratory, an eye-opening, always-changing, playful place to explore and tinker. Dive in and discover what we’re all about.

    - 2014-02-04 - 收藏
  • Bureau of Reclamation Homepage

    Bureau of Reclamation Homepage

    Bureau of Reclamation Homepage www.usbr.gov Department of the Interior, Bureau of Reclamation Homepage, Water, Dams, Dam, Projects & Facilities, Hydromet, Agrimet, hydropower

    - 2014-02-04 - 收藏
  • Aquarium of the Bay

    Aquarium of the Bay

    San Francisco Bay's Aquarium | Aquarium of the Bay www.aquariumofthebay.org

    - 2014-02-04 - 收藏
  • Niagara Falls State Park | Official Site

    Niagara Falls State Park | Official Site

    Discover Niagara Falls State Park. With the breathtaking Falls, Hurricane Decks, the Maid of the Mist and more, a Niagara Falls vacation is the ultimate getaway.

    - 2014-02-04 - 收藏
  • Cooking For Engineers

    Cooking For Engineers

    Detailed instructions on food and cooking for those who like to ask not just How? but also Why?

    - 2014-02-04 - 收藏
  • Epicurious.com

    Epicurious.com

    Epicurious.com: Recipes, Menus, Cooking Articles & Food Guides Gourmet Recipes, Home Cooking, Healthy Recipes, Food, Recipe, Cooking, Menus, Epicurious, Epicurious.com, Gourmet, Bon Appetit

    - 2014-02-04 - 收藏
  • Random House

    Random House

    Random House LLC, the world\'s largest English language trade publisher, bringing you the best in fiction, nonfiction, and children\'s books.

    - 2014-02-04 - 收藏