Saving the seas although President Obama granted protected status to 850,000 square miles of ocean, there's still more to do

     
      B25
      Barnett,C.
      Saving the seas although President Obama granted protected status to 850,000 square miles of ocean, there's still more to do C. Barnett // National Geographic. - 2017. - Vol. 231 № 2. - С. 54-77. - .