| 21 | ||
| Researcher: | Ramana, Manduru Venkata | |
| Guide: | Subrahmanyam, A | |
| University: | Acharya Nagarjuna University | |
| Language: | English | |
| Shodhganga | ||
| 22 | ||
| Researcher: | Rekha, V P B | |
| Guide: | Subrahmanyam, A | |
| University: | Acharya Nagarjuna University | |
| Language: | English | |
| Shodhganga | ||
| 23 | ||
| Researcher: | Reddy, T Chandra Mohan | |
| Guide: | Subrahmanyam, A | |
| University: | Acharya Nagarjuna University | |
| Language: | English | |
| Shodhganga | ||