Author
Kalm, Pehr, 1716-1779
5
1773-1858.1 Humbold
1
American Philosophical Society. Library
1
Armour Institute of Technology
1
Benson, Adolph B. 1881-1962,
1
Brazil. Comissão de Linhas Telegráficas Estratégicas de Mato Grosso ao Amazonas
1
Carlborg, Edith Marie Linnéa, 1888-
1
Earthwatch (Organization)
1
Forster, Johann Reinhold, 1729-1798
1
Forster, Johann Reinhold, 1729-1798,
1
Forster, Johann Reinhold, 1729-1798, tr
1
Layard, Austen Henry, Sir, 1817-1894
1
Rondon, Cândido Mariano da Silva, 1865-1958
1
Roosevelt-Rondon Scientific Expedition
1
Schreiber, Alexander
1
South America Bo
1
Stanton, William Ragan, 1925-2007
1
Wright, Noel, 1890-
1