| 1 | ||
| Researcher: | Chikkala, Hari, Mohan | |
| Guide: | Prasad, Devi, Vara. | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Nakka, Avulaiah | |
| Guide: | Johnson, P | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||