| 1 | ||
| Researcher: | Kankata, Subba Rao | |
| Guide: | Rao, G. Sambasiva | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| 2 | ||
| Researcher: | Narayana, Kona | |
| Guide: | Busi, Venkata Swamy | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||