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Subjects
- Aeronautics 2
- Africa 1
- African Americans 2
- Airplanes 1
- Audio-visual aids 1
- Aztec deities 1
- Aztecs 1
- Bibliography 6
- Bilingual education 5
- Biochemistry 1
- Biography 3
- Blacks 1
- Catholics 1
- Columbus, Christopher, 1451-1506 1
- Colón, Cristóbal, 1451-1506 1
- Cuauhtemoc, Emperor of Mexico, 1495?-1525 1
- Experiments 1
- Genetics 2
- Geology 1
- Hidalgo y Costilla, Miguel, 1753-1811 1