| 1 | |
| Researcher: | Jarapala, Nageswara Rao |
| Guide: | Prasad, R. Satya |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| Researcher: | Kasagani, Sujatha |
| Guide: | Prasad, i. Devi Vara |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |