| 281 | ||
| Researcher: | Puli, Ratna Sekar | |
| Guide: | Naik, Jagadish M. | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||
| 282 | ||
| Researcher: | Vajja, Ratna Kumari | |
| Guide: | Prasad, R. Siva Rana | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| 283 | ||
| Researcher: | M Ratna Prakash | |
| Guide: | Rao, Gopala N. | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||
| 284 | study of the vocationalization of post-secondary education (+2 stage) in the State of Andhra Pradesh | |
| Researcher: | Ratna Raju, Rayi Satyabala | |
| University: | Andhra University | |
| Language: | English | |
| 285 | Studies on Ascochyta Cypericola, a Fungal Pathogen of Cyperus Rotundus | |
| Researcher: | Ratna Kumar, P K | |
| University: | Andhra University | |
| Language: | English | |
| 286 | Irrigation and water supply in Andhradesa. C.1000 A.D. - C. 1600 A.D | |
| Researcher: | Mercy Ratna Rani, Domathoty | |
| University: | Andhra University | |
| Language: | English | |
| 287 | ||
| Researcher: | Ratna Reddy, A V | |
| Guide: | Gupta, R C | |
| University: | Devi Ahilya Vishwavidyalaya | |
| Language: | English | |
| Shodhganga | ||
| 288 | ||
| Researcher: | Mani, Godey Naga Ratna | |
| Guide: | Sasikala, C | |
| University: | Andhra University | |
| Language: | English | |
| 289 | Studies on ascochyta cypericola a fungal pathogen of cyperus rotundus | |
| Researcher: | Ratna Kumar, P K | |
| Guide: | Narayana Rao, A | |
| University: | Andhra University | |
| Language: | English | |
| 290 | ||
| Researcher: | Ratna Rani, D Mercy | |
| Guide: | Krishna Kumari, M | |
| University: | Andhra University | |
| Language: | English | |
| 291 | ||
| Researcher: | Ratna Kumar, Balla Vijaya | |
| Guide: | Setty, B SShipstone, A C | |
| University: | Dr Harisingh Gour Vishwavidyalaya | |
| Language: | English | |
| 292 | ||
| Researcher: | Thanikonda, Baby Ratna Kumari | |
| University: | Andhra University | |
| Language: | English | |
| 293 | Studies on the seed coat and Fruit wall Anatomy and Histochemistry in Apocynaceae and Asclepiadaceae | |
| Researcher: | Mary Ratna Sri, K | |
| University: | Andhra University | |
| Language: | English | |
| 294 | ||
| Researcher: | Ratna, Balla Vijaya Kumar | |
| Guide: | Setty, B S and Shipstone A C | |
| University: | Dr. Harisingh Gour Vishwavidyalaya | |
| Language: | English | |
| Shodhganga | ||
| 295 | Studies on the eco-biology of the upeneid species from the coastal waters of Visakhapatnam | |
| Researcher: | Raja , Ratna Mani B | |
| Guide: | Lakshmi, Bharatha BRao, L M | |
| University: | Andhra University, Waltair | |
| Language: | English | |
| 296 | ||
| Researcher: | Bussa, Walter Ratna Kumar | |
| Guide: | Subba Rao, B | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| 297 | Studies on the ecobiology of the upeneid species from the coastal waters of Visakhapatnam | |
| Researcher: | Raja Ratna Mani, B | |
| Guide: | Rao, L M | |
| University: | Andhra University | |
| Language: | English | |
| Shodhganga | ||
| 298 | Enhancing E Learning Using Virtual Reality For Creating Three Dimensional Web Content | |
| Researcher: | Glory Ratna Mary.D | |
| Guide: | Kirubakaran.E.Dr | |
| University: | Mother Teresa Womens University | |
| Language: | English | |
| Shodhganga | ||
| 299 | Managerial and benefit analysis on telecommunication sector_a case study in Kanyakumari district | |
| Researcher: | Blessa Ratna Bel, J | |
| Guide: | Raja Justus, E and Alagappan | |
| University: | Manonmaniam Sundaranar University | |
| Language: | English | |
| Shodhganga | ||
| 300 | Anticancer effects of D limonene and phosphatidylinositol 3 kinase inhibitors in colon cancer | |
| Researcher: | Reddy, Yakkanti Raja Ratna | |
| Guide: | Chilakapati, Damodar Reddy | |
| University: | Manipal University | |
| Language: | English | |
| Shodhganga | ||