- Author: Arthur Alphonse Ekirch
- Language: English
- Year: 2019
- Author: Arthur A. Ekirch
- Language: English
- Year: 2019
- Author: A. Roger Ekirch
- Language: English
- Year: 2017
- Author: A. Roger Ekirch
- Language: English
- Year: 2005
- Author: A. Roger Ekirch
- Language: English
- Year: 2006
- Author: Ekirch A. R., Ekirch A. Roger
- Language: English
- Year: 2006
- Author: Annesley James, Ekirch A. Roger
- Language: English
- Year: 2010
- Author: Adams John, Ekirch A. Roger, Nash Thomas
- Language: English
- Year: 2017
- Author: A. Roger Ekirch
- Language: English
- Year: 2011
- Author: Roger Ekirch
- Language: English