| 1 | |
| Researcher: | Ravuri, Rambabu |
| Guide: | Rao, P.V. Nageswara |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |
| 2 | Chemistry of gemstones from vemireddipalle area, Krishna district, Andhra Pradesh, India |
| Researcher: | Sultana, Nazia |
| Guide: | Pitchaiah, P.Sankara |
| University: | Acharya Nagarjuna University, Guntur |
| Language: | English |