| 41 | ||
| Researcher: | Raghava Rao, P | |
| Guide: | Veeraiah, N | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||
| 42 | ||
| Researcher: | Gandhi, Y | |
| Guide: | Veeraiah, N | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||
| 43 | ||
| Researcher: | Vijaya Kumari | |
| Guide: | Veeraiah, N | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||