Natural history - Amazon River Valley.

The river of doubt : = Theodore Roosevelt's darkest journey / by: (Language materials, printed)

The Amazon / by: (Language materials, printed)

Roosevelt-Rondon Scientific Expedition

Amazon River Valley- Description and travel.

Roosevelt River (Brazil)- Description and travel.

Natural history- Amazon River Valley.

Roosevelt, Theodore,- Travel- Brazil

Presidents- Biography.- United States

Rain forests- Amazon River Valley.