| 1 | ||
| Researcher: | Preetha, S R | |
| Guide: | Surendran, R | |
| University: | University of Calicut | |
| Language: | Hindi | |
| 2 | Solid phase extraction preconcentration of traces of inorganics | |
| Researcher: | Preetha C R | |
| Guide: | Prasada Rao T | |
| University: | University of Kerala | |
| Language: | English | |
| Shodhganga | ||
| 3 | ||
| Researcher: | Preetha Kumari R | |
| Guide: | Gopinathan Nair B | |
| University: | University of Kerala | |
| Language: | English | |
| Shodhganga | ||