- Author: Ch. Krishna Rao
- Language: English
- Year: 2014
- Author: T. Krishna Rao
- Language: English
- Year: 2010
- Author: T. Krishna Rao
- Language: English
- Year: 2011
- Author: T. Krishna Rao
- Language: English
- Year: 2019
- Author: K. V. Krishna Rao
- Language: English
- Year: 1997
- Author: Dr. PKS Prakash Achyutuni Sri Krishna Rao
- Language: English
- Year: 2017
- Author: Dr. PKS Prakash, Achyutuni Sri Krishna Rao
- Language: English
- Year: 2017
- Author: PKS Prakash Achyutuni Sri Krishna Rao
- Language: English
- Year: 2016
- Author: Doddapuneni Krishna Rao
- Language: English
- Year: 2014