| 1 | ||
| Researcher: | T. Chengaiah | |
| Guide: | Prof. C.K. Jayasankar | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||
| 2 | ||
| Researcher: | Ch. Chengaiah | |
| Guide: | Prof. R.V.S. Satyanarayana | |
| University: | Sri Venkateswara University | |
| Language: | English | |
| Shodhganga | ||