
Biofuels
pdf
- Author: David Armentrout Patricia Armentrout
- Language: English
- Year: 2008

Solar Energy
pdf
- Author: David Armentrout Patricia Armentrout
- Language: English
- Year: 2008

Wind Energy
pdf
- Author: David Armentrout Patricia Armentrout
- Language: English
- Year: 2008

- Author: David Armentrout Patricia Armentrout
- Language: Spanish
- Year: 2005

- Author: David and Patricia Armentrout
- Language: English
- Year: 2009

Blood Suckers
pdf
- Author: David Armentrout Patricia Armentrout
- Language: English
- Year: 2008

- Author: David and Patricia Armentrout
- Language: English
- Year: 2005

Going Green
pdf
- Author: David Armentrout Patricia Armentrout
- Language: English
- Year: 2008

- Author: David and Patricia Armentrout
- Language: English
- Year: 2007

Tiger Woods
pdf
- Author: David Armentrout Patricia Armentrout
- Language: English
- Year: 2003