- Author: Walker A. Pollard, Nannette Christ, Judith Dean, Katherine Linton, Patricia M. Thomas, Arona M. Butcher
- Language: English
- Year: 2009
- Author: Hermann E. Walker
- Language: English
- Year: 2009
- Author: Michael T. Evans, Emma D. Walker
- Language: English
- Year: 2009
- Author: Cheryl Walker
- Language: English
- Year: 1997
- Author: Moira Walker, Malcolm Hill, John Triseliotis
- Language: English
- Year: 2001
- Author: Tony Ryan, Rodger Walker
- Language: English
- Year: 2006
- Author: Keith J. Walker
- Language: English
- Year: 2010
- Author: Allan Walker, Professor Allan Walker
- Language: English
- Year: 2006
Pearson Physics
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- Author: James S. Walker
- Language: English
- Year: 2014
- Author: Timothy P. Grady, Melissa A. Walker
- Language: English
- Year: 2013