| 1 | ||
| Researcher: | K. Chengalraya Chetty | |
| Guide: | Dr. G. Chalapathi | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Sri Y. Sreepathi Reddy | |
| Guide: | Dr. G. Chalapathi | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||