| 1 | |
| Researcher: | Mishra, Ratna |
| Guide: | Mishra, Durga Shankar |
| University: | Rashtrasant Tukadoji Maharaj Nagpur University |
| Language: | Hindi |
| 2 | |
| Researcher: | Ratna, Prakash |
| Guide: | Dahiya, Yudhvir Singh |
| University: | Maharshi Dayanand University |
| Language: | English |
| 3 | Protozooplankton in relation to pollution in Visakhapatnam harbour, East Cost of India |
| Researcher: | Bharati, V Ratna |
| Guide: | Kalavati, C |
| University: | Andhra University |
| Language: | English |
| 4 | Studies on ascochyta cypericola a fungal pathogen of cyperus rotundus |
| Researcher: | Ratna Kumar, P K |
| Guide: | Narayana Rao, A |
| University: | Andhra University |
| Language: | English |
| 5 | |
| Researcher: | Ratna Rani, D Mercy |
| Guide: | Krishna Kumari, M |
| University: | Andhra University |
| Language: | English |