- Author: Gregory R. Hancock, Ralph O. Mueller
- Language: English
- Year: 2018
- Author: Gregory R. Hancock Ralph O. Mueller
- Language: English
- Year: 2013
- Author: Gregory R Hancock, Ralph O Mueller
- Language: English
- Year: 2006
- Author: Gregory R. Hancock Ralph O. Mueller
- Language: English
- Year: 2006
- Author: Gregory R. Hancock Ralph O. Mueller
- Language: English
- Year: 2010
- Author: Gregory R. Hancock Ralph O. Mueller
- Language: English
- Year: 2006
- Author: Gregory R. Hancock Ralph O. Mueller
- Language: English
- Year: 2010