| 1 | ||
| Researcher: | Raja, Badavathu | |
| Guide: | Rao, Lakshmana, A | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| 2 | ||
| Researcher: | Gummaluri, Ram Kumar | |
| Guide: | K Rama Krishna | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||