| 21 | Evaluation of the performance of various solar energy collector systems | |
| Researcher: | Chaudhary, Ratna | |
| Guide: | Garg, H PJai Prakash | |
| University: | Indian Institute of Technology-Delhi | |
| Language: | English | |
| 22 | ||
| Researcher: | Datta, Ratna | |
| University: | University of Calcutta | |
| Language: | English | |
| 23 | Roleof ventral noradrenergic bundle in sleep wakeful function of the medial preoptic area | |
| Researcher: | Sharma, Ratna | |
| Guide: | Mohan Kumar, V | |
| University: | All India Institute of Medical Sciences | |
| Language: | English | |
| 24 | ||
| Researcher: | Das, Ratna | |
| Guide: | Nag, N C | |
| University: | Bidhan Chandra Krishi Vishwavidyalaya | |
| Language: | English | |
| 25 | ||
| Researcher: | Chatterjee, Ratna | |
| Guide: | Thakur, Pandit Anantlal | |
| University: | Kameshwara SINGH DARBHANGHA SANkrit University | |
| Language: | Sanskrit | |
| 26 | Nai kavita ke kaviyon ke kavya siddhanton per pashchatya prabhav | |
| Researcher: | Dayal, Ratna | |
| Guide: | Mishra, Rajend | |
| University: | Devi Ahilya Vishwavidyalaya | |
| Language: | Hindi | |
| 27 | ||
| Researcher: | Kumari, Ratna | |
| Guide: | Rao, I Nageshwar | |
| University: | Andhra University | |
| Language: | English | |
| 28 | ||
| Researcher: | Gaji, Ratna | |
| Guide: | Chettarji, A | |
| University: | Banaras Hindu University | |
| Language: | Hindi | |
| 29 | ||
| Researcher: | Ghosh, Ratna | |
| University: | University of Calcutta | |
| Language: | English | |
| 30 | Effect of hydrogen diffusion on the solid state properties of iron, cobalt and nickel | |
| Researcher: | Ratna Rani | |
| University: | Chhatrpati Shahu Ji Maharaj University | |
| Language: | English | |
| 31 | ||
| Researcher: | Ghosh, Ratna | |
| University: | University of Calcutta | |
| Language: | English | |
| Shodhganga | ||
| 32 | ||
| Researcher: | Chowdhury, Ratna | |
| University: | Indian Institute of Technology | |
| Language: | English | |
| 33 | ||
| Researcher: | Sen, Ratna | |
| University: | Banaras Hindu University | |
| Language: | English | |
| 34 | Enzymic changes and modifications of chromosomal proteins in rats as a function of age | |
| Researcher: | Das, Ratna | |
| University: | Banaras Hindu University | |
| Language: | English | |
| 35 | ||
| Researcher: | Singh, Ratna | |
| University: | University of Lucknow | |
| Language: | English | |
| 36 | ||
| Researcher: | Sen, Ratna | |
| University: | University of Calcutta | |
| Language: | English | |
| Shodhganga | ||
| 37 | ||
| Researcher: | Ratna, M | |
| University: | University of Mysore | |
| Language: | English | |
| 38 | Dualism and investment patterns: An analysis of regional contrasts | |
| Researcher: | Ratna, Kanchan | |
| University: | University of Delhi | |
| Language: | English | |
| 39 | ||
| Researcher: | Srivastava, Ratna | |
| University: | Banaras Hindu University | |
| Language: | Hindi | |
| 40 | ||
| Researcher: | Tulika, Ratna | |
| University: | Banaras Hindu University | |
| Language: | Hindi | |