Searching materials by subject can be an effective way to find materials related to a specific topic. Below is a list of relevant subject headings:

• Amazon River Region -- In literature
• Amazon River Region -- Fiction
• Amazon River Region -- Economic conditions
• Amazon River Region -- Social life and customs
• Amazon River Region -- Social conditions
• Brazil, Northeast -- In literature
• Brazil, Northeast -- Fiction
• Brazil, Northeast -- Social life and customs
• Brazil, Northeast -- Social conditions
• Rio de Janeiro (Brazil) -- Fiction
• Rio de Janeiro (Brazil) -- In literature
• Rio de Janeiro (Brazil) -- Social life and customs
• Rio de Janeiro (Brazil) -- Social conditions
• Popular music -- Brazil, Northeast
• Popular music -- Brazil -- Rio de Janeiro -- History and criticism
• Samba (Dance) -- Brazil -- Rio de Janeiro
• Tropicália (Music) -- Brazil -- History and criticism
• City planning -- Brazil -- Rio de Janeiro
• City planning - Amazon River Region
• City panning -- Brazilian, Northeast
• [Author' name] -- Criticism and interpretation
• [Author' name] -- Diaries
• [Author' name] -- Correspondence
• [Author' name] -- Interviews
• Authors, Brazilian -- 20th century