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- Language: English
- Year: 1998

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- Language: English
- Year: 1996

- Author: P.J. Saher
- Language: English
- Year: 1976

- Author: Dan Merkur, Daniel Merkur
- Language: English
- Year: 2001

- Author: P. J. Saher, Jean Gebser
- Language: English
- Year: 1969

- Author: Andreas Mavromatis
- Language: English
- Year: 1991

- Author: Andreas Mavromatis
- Language: English
- Year: 1983

- Author: Andreas Mavromatis
- Language: English
- Year: 1991

- Author: Godwin Malcolm
- Language: English
- Year: 1994

- Author: Badri Narayan Tiwari
- Language: English
- Year: 2011