| 1 | Petrological and geochemical studies on the Gabbro-syenite complex of Chanduluru |
| Researcher: | Sharma, V Nagasai |
| Guide: | Ratnakar, J |
| University: | Osmania University |
| Language: | English |
| 2 | |
| Researcher: | Rathna, K |
| Guide: | Ratnakar, J |
| University: | Osmania University |
| Language: | English |
| 3 | Petrological and geochemical studies on the gabbros of ravipadu, prakasam district, Andhra Pradesh |
| Researcher: | Vijaya Kumar, K |
| Guide: | Ratnakar, J |
| University: | Osmania University |
| Language: | English |