- Author: Instituto Superior Pedagógico Público La Salle, Esaú Hurtado, Hernán Hurtado
- Language: Spanish, Quechua
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- Language: English
- Year: 2010
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- Language: English
- Year: 2011
- Author: Vuyisile Msila, Mishack T. Gumbo
- Language: English
- Year: 2016
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- Language: English
- Year: 1999
- Author: Giselle B. Esquivel, Geraldine V. Oades-Sese, Marguerite L. Jarvis
- Language: English
- Year: 2010
- Author: Roger M. Garrett, Roger M Garrett
- Language: English
- Year: 2011
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- Language: English
- Year: 2019
- Author: Immaculée Harushimana, Mary Alfred, R. Deborah Davis
- Language: English
- Year: 2019