- Author: David Maldwyn Ellis
- Language: English
- Year: 2010
- Author: David Maldwyn Ellis
- Language: English
- Year: 2018
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- Language: English
- Year: 2018
- Author: David JobbarFiona Ellis Chadwick
- Language: English
- Year: 2023
- Author: Steve H. Murdock David R. Ellis
- Language: English
- Year: 2020
- Author: David A. Ellis
- Language: English
- Year: 2020
- Author: David B. Ellis, Doug Toft
- Language: English
- Year: 2014
- Author: David Maldwyn Ellis & Sherri Goldstein Cash
- Language: English
- Year: 2008
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- Language: English
- Year: 2017
Systems Philosophy
djvu
- Author: David O. Ellis Fred J. Ludwig
- Language: English
- Year: 1962