- Author: William S. Clark, N. John Schmitt, Lloyd Kiff
- Language: English
- Year: 2017
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- Language: English
- Year: 2010
Aves de Perú
pdf
- Author: William S. Clark N. John Schmitt
- Language: English
- Year: 2017
- Author: Ted Floyd National Geographic Society N. John Schmitt (illustrator)
- Language: English
- Year: 2019