- Author: Dr. P. Purushothama Raj and Dr. V. Ramasamy
- Language: English
- Year: 2012
- Author: Purushothama B
- Language: English
- Year: 2016
- Author: Raj P. Purushothama
- Language: English
- Year: 2013
- Author: Raj P. Purushothama
- Language: English
- Year: 2012
- Author: Purushothama B
- Language: English
- Year: 2018
- Author: G. Purushothama
- Language: English
- Year: 1994
- Author: P Purushothama Raj
- Language: English
- Year: 2013
- Author: P Purushothama Raj
- Language: English
- Year: 2008