- Author: Bodenheimer Peter, Laughlin Gregory P., Rozyczka Michal, Yorke Harold W.
- Language: English
- Year: 2007
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- Language: English
- Year: 2006
- Author: Peter H. Gregory
- Language: English
- Year: 2004
- Author: Peter J. Gregory Stephen Nortcliff
- Language: English
- Year: 2013
- Author: Peter H Gregory
- Language: English
- Year: 2004
- Author: Peter H Gregory
- Language: English
- Year: 2004
- Author: Bodenheimer Peter, Laughlin Gregory P., Rozyczka Michal, Yorke Harold W.
- Language: English
- Year: 2007
- Author: Patricia Buckley Ebrey Peter N. Gregory
- Language: English
- Year: 1993
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- Language: English
- Year: 2009