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- Language: English
- Year: 2015

- Author: Herbert R. Northrup, Howard G. Foster
- Language: English
- Year: 2016

- Author: Benjamin Hawkins Howard Thomas Foster II
- Language: English
- Year: 2003

- Author: Howard Thomas Foster II Mary Theresa Bonhage-Freund Lisa D. O'Steen
- Language: English
- Year: 2007