| 21 | |
| Researcher: | Darga Reddy, N |
| Guide: | Subba Reddy, N |
| University: | Sri Venkateswara University |
| Language: | English |
| 22 | Biochemistry of Agnigundala Base Metal Mineralized Belt, Guntur District, Andhra Pradesh, India |
| Researcher: | Sankaranna, G |
| Guide: | Prasad, E A V |
| University: | Sri Venkateswara University |
| Language: | English |
| 23 | |
| Researcher: | Trivikrama Rao, A |
| University: | Andhra University |
| Language: | English |
| 24 | |
| Researcher: | Balayerikala Reddy, N |
| Guide: | Satyanarayana Murthy, M |
| University: | Sri Venkateswara University |
| Language: | English |