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Subject
- Discovery and exploration126
- History80
- Portuguese56
- Scientific expeditions22
- Indians of South America18
- Description and travel17
- Explorers15
- Exploring expeditions15
- Cabral, Pedro Alvares, d. 1520?10
- Discoveries in geography10
- Roosevelt-Rondon Scientific Expedition7
- Travel7
- Brazil. Comissão de Linhas Telegráficas Estratégicas de Mato Grosso ao Amazonas6
- Exploration6
- International cooperation6
- Colonies5
- Jesuits5
- Telegraph5
- Astronautics4
- Boundaries4