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- Language: English
- Year: 2002
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- Year: 2001
- Author: Stephen L. Nelson Pat Coleman
- Language: English
- Year: 2000
- Author: V. Rudometov E. Rudometov
- Language: English
- Year: 2002
- Author: Rebecca Grant
- Language: English
- Year: 1998
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- Language: English
- Year: 1998