| 1 | ||
| Researcher: | Kurumaddali Usha Sharma | |
| Guide: | Dr. G.M. Sundaravalli | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Nagula Ankanna | |
| Guide: | Dr. G.M. Sundaravalli | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||